Humans normally have 46 chromosomes in each cell, divided into 23 pairs. Two copies of chromosome 9, one copy inherited from each parent, form one of the pairs. Chromosome 9 is made up of about 140 million DNA building blocks (base pairs) and represents approximately 4.5 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 9 likely contains between 800 and 1,300 genes.
Genes on chromosome 9 are among the estimated 20,000 to 25,000 total genes in the human genome.
BGI-Research and the Maternal and Child Health Hospital of Hubei Province (MCHH) published whole-genome sequencing research results in npj Genomic Medicine.
Genetic mutations kick start cancers. Some mutations shuffle the genetic code, others come from the deletion of key genes.
The birth of every new life is to be celebrated! Expecting parents often advised by doctors from the department of gynecology and obstetrics to consider noninvasive prenatal tests (NIPT).
The discovery of a genetic variant that is relatively common among people of Polynesian ancestry, but incredibly rare in most other populations, is giving clues to the genetic underpinnings of high cholesterol in all people, according to new research led by University of Pittsburgh School of Public Health geneticists in partnership with several other groups, including the University of Otago and the Samoan health research community.
Bipolar disorder, a neuropsychiatric condition that includes manic and depressive episodes, affects about 1% of the population and is strongly influenced by genetics.
Individuals with Down syndrome have less-frequent viral infections, but when present, these infections lead to more severe disease.
Researchers discuss the role of oxidative stress in genetic conditions.
Scientists led by the University of Tennessee Health Science Center (UTHSC) and the École Polytechnique Fédérale de Lausanne (EPFL) in Switzerland are exploring the elaborate interplay between genes, sex, growth, and age and how they influence variation in longevity.
Case Western Reserve University researchers have identified a mechanism in brain tissue that may explain why women are more vulnerable to Alzheimer's disease-;a finding that they say could help lead to new medicines to treat the disease.
For the very first time, a study led by Julian Chen and his group in Arizona State University's School of Molecular Sciences and the Biodesign Institute's Center for the Mechanism of Evolution, has discovered an unprecedented pathway producing telomerase RNA from a protein-coding messenger RNA (mRNA).
Researchers reviewed the sexual dimorphisms in obesity.
Yourgene Health plc (“Yourgene”, AIM: YGEN), a leading international molecular diagnostics group, today announced it has received Health Sciences Authority (HSA) approval for its IONA® Nx NIPT Workflow in Singapore.
Researchers debunk man flu based on a review of available evidence.
Duchenne muscular dystrophy (DMD) is caused by a genetic mutation and affects one in every 5,000 boys born. Because the affected gene is on the X chromosome, girls are carriers of the mutant gene but develop the disease only very rarely (one in about 50 million).
A recent study hypothesized that ALT might compromise telomere integrity if not restricted appropriately.
Genetic variation affecting developmental genes not previously linked to urethral development may contribute to a congenital condition that is the most common cause of kidney failure in young males, a study published today in eLife suggests.
A new study led by Claus M. Azzalin, group leader at Instituto de Medicina Molecular João Lobo Antunes- iMM and published today in the prestigious scientific journal Proceedings of the National Academy of Sciences (PNAS) shows, for the first time, that the cell's anti-aging structures – the telomeres – can set the damage threshold a cancer cell can sustain and above which cells cannot continue to divide and die.
A new mechanism that slows down and may even prevent the natural aging of immune cells – one of the nine 'hallmarks of aging' – has been identified by an international team led by UCL scientists.
Researchers at Johns Hopkins Medicine report that an experimental drug first developed to treat kidney disease prolongs survival and improves muscle function in mice genetically engineered to develop a severe form of Duchenne muscular dystrophy (DMD).
By combining traditional eye imaging techniques with adaptive optics - a technology that enhances imaging resolution - researchers at the National Eye Institute have shown for the first time how cells across different tissue layers in the eye are affected in people with choroideremia, a rare genetic disorder that leads to blindness.