Humans normally have 46 chromosomes in each cell, divided into 23 pairs. Two copies of chromosome 20, one copy inherited from each parent, form one of the pairs. Chromosome 20 spans about 62 million DNA building blocks (base pairs) and represents approximately 2 percent of the total DNA in cells.
Identifying genes on each chromosome is an active area of genetic research. Because researchers use different approaches to predict the number of genes on each chromosome, the estimated number of genes varies. Chromosome 20 likely contains between 700 and 800 genes.
Genes on chromosome 20 are among the estimated 20,000 to 25,000 total genes in the human genome.
Take a puff of nicotine for the first time, and your DNA plays an important role, alongside social and environmental factors, in shaping what happens next.
The global population aged 60 or over is growing faster than all younger age groups and faces the tide of chronic diseases threatening their quality of life and posing challenges to healthcare and economy systems.
Despite their especially compact structure that is difficult to access, telomeres transcribe information like the rest of the DNA.
Northwestern Medicine scientists have discovered a new cause of Parkinson's disease -- mutations in a gene called TMEM230. This appears to be the third gene definitively linked to confirmed cases of the common movement disorder.
Researchers from the University of S-o Paulo (USP) have identified an RNA known as INXS that, although containing no instructions for the production of a protein, modulates the action of an important gene in the process of apoptosis, or programmed cell death.
An international study, published today in the prestigious journal Nature Biotechnology, reveals more about human pluripotent stem cells and their genetic stability and has important implications for the development of therapies using these cells.
A team of international researchers, including Case Western Reserve University School of Medicine, have discovered regions of the genome that affect the severity of the genetic disease cystic fibrosis, the most common lethal genetic disease affecting children in North America.
Johns Hopkins Institute for Genetic Medicine researchers working as part of the North American Cystic Fibrosis Consortium have discovered two regions of the genome that affect the severity of cystic fibrosis, a genetic condition that causes scarring throughout the body, affecting most notably the pancreas and lungs.
In a new study scientists have found that particular genetic variations are linked to early menopause before the age of 45. They compared the DNA of more than 2,000 women who had experienced early menopause with that of women who had menopause later than 45 years.
An international consortium of scientists, led by researchers at Johns Hopkins University has identified two genes that when altered are closely associated with cleft lip and/or cleft palate. Cleft lip and cleft palate are among the world's most common congenital malformations and occur in one in every 700 births. The finding is the result of the largest family-based, genome-wide study of cleft lip and/or cleft palate conducted to date. The results were published online by the journal Nature Genetics.
The gene for a newly recognized disease has been identified thanks to the determination of an Amish father and the clinical skills and persistence of Indiana University and Riley Hospital for Children physicians in collaboration with physicians and researchers at the Clinic for Special Children in Lancaster County, Penn., which specializes in disorders of the Amish.
It's well known that puffing on cigarettes can eventually leave you out of puff.
Pharmacogenomics research and development innovator PharmaGenoma, Inc. and its subsidiary HairDX, LLC, today unveiled the next generation of its genetic screening test for male pattern baldness. The HairDX test is available immediately thru qualified physicians' offices.
Scientists have discovered that 1 in 7 men have a genetic risk for baldness. Researchers at Canada's McGill University and King's College London along with scientists at drug company GlaxoSmithKline have solved the mystery of male pattern baldness but say treating it will require more research.
Researchers at McGill University, King's College London and GlaxoSmithKline Inc. have identified two genetic variants in caucasians that together produce an astounding sevenfold increase the risk of male pattern baldness. Their results will be published Oct. 12 in the journal Nature Genetics.
Researchers have discovered two new genes that increase the risk of developing inflammatory bowel disease (IBD) in childhood.
In two papers published today, deCODE scientists and academic colleagues from Europe and the U.S. expand upon the company's recent findings in the genetics of pigmentation traits in people of European descent, and demonstrate that certain of these common variants also confer risk of two types of skin cancer.
A gene involved in the action of insulin is associated with type 2 diabetes and the body’s response to insulin, report scientists at Wake Forest University Baptist Medical Center.
International research teams studying two distinct populations have found variants in a gene that may predispose people to type 2 diabetes, the most common form of the disease. The researchers, who collaborated extensively in their work, report their findings in companion articles in the April issue of Diabetes.
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