Chromosome 12
Estimated by Protein-coding genes Non-coding RNA genes Pseudogenes Release date
CCDS 988 - - 2016-09-08
HGNC 995 318 545 2017-05-12
Ensembl 1,033 1,202 617 2017-03-29
UniProt 1,032 - - 2018-02-28
NCBI 1,036 853 693 2017-05-19
Genes -- Number of genes
The following are some of the gene count estimates of human chromosome 12 . 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 . [ 5 ]
Chromosome 12 is one of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 12 spans about 133 million base pairs (the building material of DNA) and represents between 4 and 4.5 percent of the total DNA in cells. Chromosome 12 contains the Homeobox C gene cluster.