Genes

The genes are composed of DNA and are carried on the chromosomes. Genes direct the production of all the molecules that form the structures that of a cell. Genes determine the inherited characteristics that distinguish one individual from another. Each human has an estimated 90,000 genes.

Genes - most related articles:

- Melanoma genes identified by Australian researchers - 2.8
- Genes linked to moles, melanoma, skin cancer - 2.6
- Conservation of genes may stop aging - 2.5
- Altered genes play role in development of brain tumors - 2.5
- Obesity starts in the head? - 2.3
- Chromosomal changes increase schizophrenia risk - 2.3
- Evolutionary biologist gets grant to study HIV - 2.2
- Genetic changes in 3 genes linked to autism spectrum disorders - 2.2
- Genetic changes may lead to Barrett's esophagus and esophageal cancer - 2.2
- Master switch gene for obesity and diabetes discovered - 2.2

Genes articles

Violence during childhood may impact kids' DNA
Children who have experienced violence might really be older than their years. The DNA of 10-year-olds who experienced violence in their young lives has been found to show wear and tear normally associated with aging, a Duke University study has found.

Genetic changes in 3 genes linked to autism spectrum disorders
Mutations in three new genes have been linked to autism, according to new studies including one with investigators at Mount Sinai School of Medicine. All three studies include lead investigators of the Autism Sequencing Consortium (ASC).

Two genes TPH1 and TPH2 more likely to develop PTSD symptoms
Why do some persons succumb to post-traumatic stress disorder (PTSD) while others who suffered the same ordeal do not? UCLA scientists have linked two genes involved in serotonin production to a higher risk of developing PTSD.

Breast cancer risk gene can be discovered by massively parallel sequencing
A new technology is developed to fast track the discovery of a breast cancer risk gene and could assist in the discovery of other cancer genes. Now, breast cancer risk gene can be discovered using the latest genetic sequencing technology.

Cancer treatment with personalised approach to cancer patients
Recently researchers have profiled genetic changes in cancer with drug sensitivity in order to develop a personalised approach to cancer treatments. They uncovered hundreds of associations between mutations in cancer genes and sensitivity to anticancer drugs.

Genetic variations transform mild influenza to a life threatening disease
Genetic variations in human body make it more susceptible to diseases. A genetic finding explains why influenza becomes a life-threating disease to some people while it has only mild effects in others.

Reversing Alzheimer's gene blockade can restore memory
MIT neuroscientists have shown that an enzyme overproduced in the brains of Alzheimer's patients creates a blockade that shuts off genes necessary to form new memories. Furthermore, by inhibiting that enzyme in mice, the researchers were able to reverse Alzheimer's symptoms.

10% of ADHD patients linked to GMR gene variants
Pediatric researchers analyzing genetic influences in attention-deficit/hyperactivity disorder (ADHD) have found alterations in specific genes involved in important brain signaling pathways.

Listeria monocytogenes on Jensen Farms Rocky Ford brand cantaloupes confirmed
US Food and Drug Administration announced that it found Listeria monocytogenes in samples of Jensen Farms' Rocky Ford-brand cantaloupe taken from a Denver-area store and on samples taken from equipment and cantaloupe at the Jensen Farms' packing facility.

Do not eat Rocky Ford Cantaloupe shipped by Jensen Farms US
US FDA is warning consumers not to eat Rocky Ford Cantaloupe shipped by Jensen Farms of Granada, Colo. The majority of the patients reported eating cantaloupe marketed from the Rocky Ford growing region. FDA's traceback data from the State of Colorado about their confirmed cases of Listeria monocytogenes have identified a common producer of Rocky Ford cantaloupes. That producer is Jensen Farms. Although the investigation is ongoing, no other Rocky Ford cantaloupe producer has been found in common in the Colorado traceback.

Multistate outbreak of Listeria in US
The U.S. Food and Drug Administration is working closely with the Centers for Disease Control and Prevention and state health agencies to investigate a multi-state outbreak of listeriosis.

29 new genetic variants linked to multiple sclerosis
Scientists have identified 29 new genetic variants linked to multiple sclerosis, providing key insights into the biology of a very debilitating neurological disease. Many of the genes implicated in the study are relevant to the immune system, shedding light onto the immunological pathways that underlie the development of multiple sclerosis.

Genetic changes may lead to Barrett's esophagus and esophageal cancer
Mutations in three genes have been identified that are more prevalent in patients with esophageal cancer and Barrett esophagus, a premalignant metaplasia (change in cells or tissue) caused by chronic gastroesophageal reflux disease (GERD), according to preliminary research reported in the July 27 issue of JAMA.

Marked reduction of HIV among circumcised adult men
Researchers presenting late breaking research on the final day of the 6th IAS Conference on HIV Pathogenesis, Treatment and Prevention (IAS 2011) have focussed on new studies in the field of circumcision, pre-exposure prophylaxis (PrEP) and antiretroviral treatment. The IAS 2011 conference has been attended by over 5000 researchers, clinicians and community leaders since Sunday in Rome.

The Aging Myth by Joseph Chang is number 1 in 4 days
The Aging Myth: Unlocking the Mysteries of Looking and Feeling Young by Joseph Chang has become number one Bestsellers in Health, Mind & Body at Amazon.com in just four days. Aging or Ageing is a gradual change in an organism that leads to increased risk of weakness, disease, and death. It takes place in a cell, an organ, or the total organism over the entire adult life span of any living thing.

Low body fat may not lower risk for heart disease and diabetes
Researchers revealed that some people with a specific form of the gene are more likely to have lower percent body fat, but also more likely to develop heart disease and type 2 diabetes, because the gene lowers only the "subcutaneous" fat under the skin, but not the more harmful "visceral" fat that surrounds organs. People with this gene variant are less able to store fat safely under the skin and may, therefore, store fat elsewhere in the body, where it may interfere with normal organ function.

Inform Dual ISH to determine HER2 gene in breast cancer patients
Breast cancer is the second leading cause of cancer-related death among women. About 20 percent of women diagnosed with breast cancer are HER2-positive. The Inform Dual ISH test allows lab personnel to count the number of copies of HER2 genes on chromosome 17 in a small sample of the breast tumor. Copies of the HER2 gene appear black and copies of chromosome 17 appear red. Patients with more than the normal number of copies of the HER2 gene are considered candidates for Herceptin therapy.

Master switch gene for obesity and diabetes discovered
A team of researchers, led by King's College London and the University of Oxford, have found that a gene linked to type 2 diabetes and cholesterol levels is in fact a 'master regulator' gene, which controls the behaviour of other genes found within fat in the body.

How breast cancer cells adapt to environmental stress
An international research team led by Dr. Tak Mak, Director, The Campbell Family Institute for Breast Cancer Research at Princess Margaret Hospital (PMH), has discovered a new aspect of "metabolic transformation", the process whereby tumour cells adapt and survive under conditions that would kill normal cells.

Activation of biomarker may improve survival among obese patients with colorectal cancer
Among obese patients, activation of the protein biomarker CTNNB1 was associated with better colorectal cancer-specific survival and overall survival, whereas post-diagnosis physical activity was associated with better colorectal cancer-specific survival among patients negative for CTNNB1.

Genes identified causing antimalarial drug resistance
Using a pair of powerful genome-search techniques, researchers from the Harvard School of Public Health (HSPH), Harvard University, and the Broad Institute have identified several genes that may be implicated in the malaria parasite's notorious ability to rapidly evade drug treatments.

Gene based prostate cancer test may make more accurate treatment decisions
Researchers conducted an elaborate series of experiments to identify the genes most closely linked to the aggressive biology of prostate cancer. They found about 300 genes that distinguished the two groups - indolent versus aggressive prostate cancers.

New way to fight antibiotic resistant bacteria
Treating municipal wastewater solids at higher temperatures may be an effective tool in the fight against antibiotic-resistant bacteria, says researchers from the University of Minnesota's College of Science and Engineering.

Paracetamol use in pregnancy may lead to childhood asthma in baby
Evidence suggesting that the risk of childhood asthma associated with prenatal paracetamol exposure may depend on antioxidant genes in the mother has been found by a team of UK scientists.

Preventive cancer surgeries save women's lives
A new study underscores the importance for women with a family history of breast or ovarian cancer to get genetic counseling and testing for the BRCA1 and BRCA2 genes that make them more likely to develop lethal breast or ovarian cancer, says a Northwestern Medicine oncologist.

Antisense may protect from Ebola and Marburg viruses
Treatments targeting specific viral genes protected monkeys infected with deadly Ebola or Marburg viruses, revealed in a new research.

Cigarette smoke causes harmful changes in lungs even at lowest levels
Casual smokers may think that smoking a few cigarettes a week is "no big deal." But according to new research from physician-scientists at NewYork-Presbyterian Hospital/Weill Cornell Medical Center, having an infrequent smoke, or being exposed to secondhand smoke, may be doing more harm than people may think.

Genes and Pesticide Exposure increases Parkinson's Disease risk
Genetic mutations and workplace exposure to some insecticides together appear to be associated with an increased risk for Parkinson's disease among men, according to a report in the June issue of Archives of Neurology, one of the JAMA/Archives journals.

Gene test identifies subtypes of breast cancer
A simple genetic test that uses just three genes is among the most effective means of classifying breast cancer into sub-types, US researchers report at the IMPAKT Breast Cancer Conference in Brussels, Belgium.

BRCA mutation increases breast cancer risk in opposite breast
Women with breast cancer before age 55 who carry an inherited mutation in the breast cancer susceptibility genes BRCA1 or BRCA2 are four times more likely to develop cancer in the breast opposite, or contralateral, to their initial tumor as compared to breast cancer patients without these genetic defects.

Isolated DNA Claims are Not Patentable, US
A federal judge on Monday struck down patents on two genes -- BRCA1 and BRCA2 -- linked to breast and ovarian cancer. Shares of Myriad Genetics (MYGN.O) fell as much as 7 percent, a day after the ruling.

Genes found linked to breast cancer drug resistance
Researchers at Dana-Farber Cancer Institute have discovered a gene activity signature that predicts a high risk of cancer recurrence in certain breast tumors that have been treated with commonly used chemotherapy drugs.

Green tea may reduce lung cancer risk in smokers
Drinking green tea could modulate the effect of smoking on lung cancer. Results of this hospital-based, randomized study conducted in Taiwan were presented at the AACR-IASLC Joint Conference on Molecular Origins of Lung Cancer, held here from Jan_11-14, 2010.

Two new genes identified causing ankylosing spondylitis
Work done in part by researchers at The University of Texas Health Science Center at Houston has led to the discovery of two new genes that are implicated in ankylosing spondylitis (AS), an inflammatory and potentially disabling disease.

Leprosy susceptibility genes reported in a genome study
In the first genome-wide association study (GWAS) of leprosy and the largest GWAS on an infectious disease, scientists at the Genome Institute of Singapore (GIS) and 26 institutes in China identified seven genes that increase an individual's susceptibility to leprosy.

New genes for lung disease discovered
Scientists have discovered five genetic variants that are associated with the health of the human lung. The research by an international consortium of 96 scientists from 63 centres in Europe and Australia sheds new light on the molecular basis of lung diseases.

Pain relief drugs may encourage cancer growth
Opiate-based painkillers like morphine can stimulate the growth and spread of cancer cells, revealed by researchers.

Genome 10K - to sequence 10000 vertebrates
An international group of scientists is proposing to generate whole genome sequences for 10,000 vertebrate species using technology so new it hasn't yet been invented.

Sleep loss may increase Alzheimer's disease
Neurodegenerative disorders like Alzheimer's disease and Parkinson's disease often disrupt sleep. The new researches indicate that sleep loss could play a role in the genesis of such disorders.

A new therapy to cure skin cancer
A potential new investigational therapy for advanced and metastatic basal cell skin cancer is revealed by researchers.

High insulin level increases prostate cancer risk
Elevated insulin levels in the normal range appear to be associated with an increased risk of prostate cancer, revealed by researchers in a new study published in the Journal of the National Cancer Institute.

Genetic link to placebo response in depression
In people suffering from major depressive disorder, depression or MDD, genes that influence the brain's reward pathways may modulate the response to placebos, revealed by researchers.

Genes linked to blood pressure in African-Americans
Five genetic variants related to blood pressure -- hypertension -- in African-Americans, revealed by a team of researchers from the National Institutes of Health, USA.

Altered genes play role in development of brain tumors
The interaction between a network of altered genes appears to play an important role in the development and progression of brain tumors, revealed by researchers in the Journal of the American Medical Association -- JAMA.

Melanoma genes identified by Australian researchers
Two new genes that together double a person's risk of developing melanoma are identified by researchers from the Queensland Institute of Medical Research (QIMR), Australia.

Breast cancer's ability to relapse linked to genes
New research led by investigators at Memorial Sloan-Kettering Cancer Center (MSKCC) sheds light on a genetic function that gives breast cancer cells the ability to survive and spread to the bone years after treatment has been administered.

Genes linked to moles, melanoma, skin cancer
Why people with the greatest number of moles are at increased risk of the most dangerous form of skin cancer, this puzzle is solved by UK researchers. Their findings are published in the journal Nature Genetics.

Dietary fat from red meat and dairy linked to pancreatic cancer
High intake of dietary fats from red meat and dairy products was associated with an increased risk of pancreatic cancer, revealed by researchers. This study was undertaken because research relating fat intake to pancreatic cancer was inconclusive.

Depression linked to stressful life events rather genes
Stressful life events are strongly associated with a person's risk for major depression, but a certain gene variation long thought to increase risk in conjunction with stressful life events actually may have no effect.

Cannabis smoke alters human DNA, raising cancer risk
Cannabis smoke damages DNA in ways that could potentially increase the risk of cancer development in humans, revealed by researchers. The new study published by University of Leicester researchers in the journal Chemical Research in Toxicology.

2 new locations of genes causing multiple sclerosis
Two new locations of genes responsible for multiple sclerosis are discovered which will help to unravel the causes of MS and other autoimmune disease, revealed by Australian and New Zealand researchers

New gene silencing way to turn off cervical cancer genes
Researchers at The University of Queensland have developed a way to deliver drugs which can specifically shut down cancer-causing genes in tumour cells while sparing normal healthy tissues.

Diabetes drug metformin enhances cancer vaccine efficacy
University of Pennsylvania School of Medicine researchers have found that a common anti-diabetic drug might enhance the effectiveness of vaccines. The findings are described this week in an advanced online publication of Nature.

Genes and smoking play role in rheumatoid arthritis
Recent genetic studies have revealed several new sites of genes that are risk factors for developing rheumatoid arthritis (RA), revealed by researchers in the June issue of Arthritis & Rheumatism.

Genes responsible for testicular cancer risk in men
Researchers at the University of Pennsylvania School of Medicine have uncovered variation around two genes that are associated with an increased risk of testicular cancer.

Infertility linked to genes for earlier menopause
For the first time, scientists have been able to identify genetic factors that influence the age at which natural menopause occurs in women. Ms Lisette Stolk, a researcher from Erasmus MC, Rotterdam, The Netherlands, told the annual conference of the European Society of Human Genetics that a greater understanding of the factors influencing age at menopause might eventually help to improve the clinical treatment of infertile women.

Zebrafish provide a model for cancerous melanoma in humans
In a new study published in Disease Models & Mechanisms, scientists use the zebrafish to gain insight into the influence of known cancer genes on the development and progression of melanoma, an aggressive form of human skin cancer with limited treatment options.

Down syndrome patients have a reduced risk for cancer
Most cancers are rare in people with Down syndrome, whose overall cancer mortality is below 10 percent of that in the general population.

Saffron has remarkable effects on eye vision
The herb saffron may hold one of the keys to preventing the loss of sight in old age – and may even help to improve vision in people suffering certain blinding eye diseases.

Turmeric extract curcumin may suppress fat growth in obese
Curcumin, the major polyphenol found in turmeric, appears to reduce weight gain in mice and suppress the growth of fat tissue in mice and cell models.

Genetic factors may predict depression in heart disease patients
Individuals with heart disease are twice as likely to suffer from depression as the general population, an association the medical community has largely been unable to explain. Now, a new study by researchers at The Miriam Hospital, in conjunction with The Montréal Heart Institute, University of Montréal and McGill University, reveals there may be genetic variations that contribute to depression in heart disease patients.

Women's menstruation genes identified
Researchers from the Peninsula Medical School, along with collaborators from research institutions across Europe and the United States, have for the first time identified two genes that are involved in determining when girls begin menstruation.

Developing a genetic test for pregnancy risks
University of Adelaide researchers are developing a world-first genetic test that can predict which pregnancies are at risk of complications long before symptoms arise.

AMP joins ACLU to challenge BRCA gene patents
The Association for Molecular Pathology (AMP) announced that it is working with the American Civil Liberties Union (ACLU) and the Public Patent Foundation to bring a lawsuit charging that patents on two human genes associated with breast and ovarian cancer are unconstitutional and should be invalidated.

Gene p18 defects linked to breast cancer
The discovery of tumor-suppressor genes has been key to unlocking the molecular and cellular mechanisms leading to uncontrolled cell proliferation – the hallmark of cancer.

Genes spread breast cancer cells to brain
New research led by investigators at Memorial Sloan-Kettering Cancer Center (MSKCC) identifies three genes that specifically mediate the metastasis, or spread, of breast cancer to the brain and illuminates the mechanisms by which this spread occurs.

Late motherhood boosts family lifespan
Women who have babies naturally in their 40s or 50s tend to live longer than other women. Now, a new study shows their brothers also live longer, but the brothers' wives do not, suggesting the same genes prolong lifespan and female fertility, and may be more important than social and environmental factors.

Autism tied to genes that influence brain cell connections
Researchers have identified a new gene variant that is highly common in autistic children. Gene, known as CDH10, is most active in key regions that support language, speech and interpreting social behavior.

Stroke linked to genetic changes
Scientists have identified a previously unknown connection between two genetic variants and an increased risk of stroke, providing strong evidence for the existence of specific genes that help explain the genetic component of stroke.

Amalgamated sprouts contaminated with Listeria
Amalgamated Produce, Inc. (API), Bridgeport, CT, announced a voluntary recall of its Specialty Farms, Vermont Sprout House, Nature's Promise and BroccoSprouts (noted as distributed by API, Bridgeport, CT) sprout items with sell by date codes of March_31 through April_27, 2009.

New cancer gene UTX identified
Researchers have identified a new cancer gene - one that is common to many cancers and affects the most basic regulation of our genes.

10 genes identified in connection with sudden cardiac death
Irregular heart rhythms are a common cause of sudden cardiac death or SCD, a condition that accounts for 450,000 deaths annually in the United States.

Gene mutations cause childhood brain cancer medulloblastoma
Researchers funded by the Canadian Cancer Society have discovered eight similar genes that, when mutated, appear to be responsible for medulloblastoma – the most common of childhood brain cancers.

Brain cancer malignant glioma linked to gene mutations
Scientists at Duke University Medical Center and Johns Hopkins University have discovered mutations in two genes that could become therapeutic targets in malignant glioma, a dangerous class of brain tumors.

New genomic test to personalize breast cancer treatment
A set of 50 genes can be used to reliably identify the four known types of breast cancer, according to research conducted at Washington University School of Medicine in St. Louis and collaborating institutions.

Parkinson's disease genes linked to manganese poisoning
A connection between genetic and environmental causes of Parkinson's disease has been discovered by a research team led by Aaron D. Gitler, PhD, Assistant Professor in the Department of Cell and Developmental Biology at the University of Pennsylvania School of Medicine.

Genetic influence in social networks
Researchers from Harvard University and the University of California, San Diego have found that our place in a social network is influenced in part by our genes.

New approach to treat HIV, AIDS
Researchers at the Indiana University School of Medicine have identified a potential new target in the war on HIV/AIDS.

Obesity starts in the head?
Obesity is known to increase the risk of chronic disorders, such as diabetes (type 2). An international team of scientists with German participation through the Helmholtz Zentrum München identified six new obesity genes.

Few DNA repair genes associated with cancer risk
Variants of numerous DNA repair genes initially appeared to be statistically significantly associated with cancer risk in epidemiological studies.

Scientists isolate genes that made 1918 flu lethal
By mixing and matching a contemporary flu virus with the "Spanish flu" - a virus that killed between 20 and 50 million people 90 years ago in history's most devastating outbreak of infectious disease - researchers have identified a set of three genes that helped underpin the extraordinary virulence of the 1918 virus.

Brain genes linked to BMI, obesity
A genetic study of more than 90,000 people has identified six new genetic variants that are associated with increased Body Mass Index (BMI), the most commonly used measure of obesity. Five of the genes are known to be active in the brain, suggesting that many genetic variants implicated in obesity might affect behaviour, rather than the chemical processes of energy or fat metabolism.

12 new genes identified for managing cholesterol, glucose, melatonin, sleep
Scientists have identified 12 new genes that are somewhat strange bedfellows: Some link gallstones and blood cholesterol levels, others link melatonin and sleep patterns to small increases in glucose levels and larger jumps in the risk of diabetes.

A universal mechanism of aging is identified
Researchers have discovered that DNA damage decreases a cell's ability to regulate which genes are turned on and off in particular settings. This mechanism, which applies both to fungus and to us, might represent a universal culprit for aging.

Genetic screening for diabetes not helpful
Screening for a panel of gene variants associated with the risk for type 2 diabetes can identify adults at risk for the disorder but is not significantly better than assessment based on traditional risk factors such as weight, blood pressure and blood sugar levels.

Purple, high anthocyanin tomatoes offer protection against certain cancers
Scientists have expressed genes from snapdragon in tomatoes to grow purple tomatoes high in health-protecting anthocyanins.

New genes identified linked to lung cancer
Working as part of a multi-institutional collaboration, scientists at Washington University School of Medicine in St. Louis have assembled the most complete catalog to date of the genetic changes underlying the most common form of lung cancer.

Genes, lower reward response linked to weight gain, obesity
The brains of obese people seem to respond to a tasty treat with less vigor than the brains of their leaner peers, suggesting obese people may overeat to compensate for a reduced reward response, according to a new brain imaging and genetics study conducted by researchers at Yale University, The John B. Pierce Laboratory, the University of Texas and Oregon Research Institute.

DNA could reveal your surname and family links
Scientists at the world-leading Department of Genetics at the University of Leicester – where the revolutionary technique of genetic fingerprinting was invented by Professor Sir Alec Jeffreys - are developing techniques which may one day allow police to work out someone's surname from the DNA alone.

New gene identified for age related macular degeneration AMD
A new genetic association is established with the eye condition age-related macular degeneration (AMD), revealed by researchers.

New genes linked to gout
Researchers have identified two new genes – and confirmed the role of a third gene – associated with increased risk of higher levels of uric acid in the blood, which can lead to gout, a common, painful form of arthritis.

A genetic trait identified for colorectal cancer risk
Scientists at Northwestern University's Feinberg School of Medicine and colleagues have discovered a genetic trait that is present in 10 to 20 percent of patients with colorectal cancer. The findings strongly suggest that the trait is a major contributor to colorectal cancer risk and likely the most common cause of colorectal cancer to date.

Chromosomal changes increase schizophrenia risk
People with schizophrenia (mental illness variously affecting behavior, thinking, and emotion) have an increased number of unusual chromosomal changes, particularly structural changes that have the potential to alter the function of the genes.

Second genetic link to obesity
A study of 90,000 people has uncovered new genetic variants that influence fat mass, weight and risk of obesity. The variants act in addition to the recently described variants of the FTO gene: on average, adults carrying variants in both genes are 3.8 kg (or 8.5 lb) heavier.

Brain and genes to improve anxiety treatment
Right now, about half of all people who take medicine for an anxiety disorder don't get much help from it. And doctors have no definitive way to predict who will, and who won't, benefit from each anti-anxiety prescription they write.

Cancer stem cells created with genes technique
With a bit of genetic trickery, researchers at the Stanford University School of Medicine have turned normal skin cells into cancer stem cells, a step that will make these naturally rare cells easier to study.

Heart disease predetermined by oxygen levels in the womb
The amount of oxygen available to a baby in the womb can affect their susceptibility to developing particular diseases later in life. Research presented at the annual Society for Endocrinology BES meeting in Harrogate shows that your risk of developing cardiovascular disease can be predetermined before birth, not only by your genes, but also by their interaction with the quality of the environment you experience in the womb.

Type 2 diabetes genes associated with prostate cancer
Scientists have identified six new genes which play a role in the development of type 2 diabetes, and among the group is the second gene known to also play a role in prostate cancer.

Parents contribute to breech delivery in offspring
A baby is twice as likely to be born bottom first if either or both the parents were themselves breech deliveries, according to a study published ahead of print on bmj.com. The results suggest genes are a contributing factor.

Genetic errors may cause schizophrenia
Schizophrenia, a debilitating psychiatric disorder, is caused by some genetic errors due to deletions and duplications of DNA are more common in people with the mental disorders, revealed by researchers at the University of Washington and Cold Spring Harbor Laboratories.

100 Genes articles listed above.

What is Genes
The genes are composed of DNA and are carried on the chromosomes. Genes direct the production of all the molecules that form the structures that of a cell. Genes determine the inherited characteristics that distinguish one individual from another. Each human has an estimated 90,000 genes.

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