Chromosome 7 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 7 spans about 159 millionbase pairs (the building material of DNA) and represents between 5 and 5.5 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 7 is likely to contain between 1,000 and 1,400 genes. It also contains the Homeobox A gene cluster.
Diseases and disorders
The following diseases are some of those related to genes on chromosome 7:
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While this internal rivalry is usually hard to see, it becomes clearer when it involves genes on the X and Y chromosomes, which determine the sex of mammals.
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The decision, approved after a two-day WorldAthleticsCouncil meeting in Nanjing, revives a form of chromosome testing discontinued in the 1990s, aimed at identifying the presence of a Y ...