Chromosome 9 is one of the 23 pairs of chromosomes in humans. Humans normally have two copies of this chromosome, as they normally do with all chromosomes. Chromosome 9 spans about 138 million base pairs of nucleic acids (the building blocks of DNA) and represents between 4.0 and 4.5% of the total DNA in cells.
Genes
Number of genes These are some of the gene count estimates of human chromosome 9. Because researchers use different approaches to genome annotation, their predictions of the number of genes on each chromosome varies (for technical details, see gene prediction). Among various projects, the collaborative consensus coding sequence project (CCDS) takes an extremely conservative strategy. So CCDS's gene number prediction represents a lower bound on the total number of human protein-coding genes.
Gene list
The following is a partial list of genes on human chromosome 9. For a complete list, see the link in the infobox on the right.
Diseases and disorders The following diseases are some of those related to genes on chromosome 9:
Cytogenetic band
References
External links
National Institutes of Health. "Chromosome 9". Genetics Home Reference. Archived from the original on 2007-06-30. Retrieved 2017-05-06. "Chromosome 9". Human Genome Project Information Archive 1990–2003. Retrieved 2017-05-06.