Chromosome number 9

Chromosome 9 (human)
Human chromosome 9 pair after G-banding. One is from mother, one is from father.
Chromosome 9 pair in human male karyogram.
Features
Length (bp)	138,394,717 bp (GRCh38)
No. of genes	739 (CCDS)
Type	Autosome
Centromere position	Submetacentric (43.0 Mbp)
External map viewers
Ensembl	Chromosome 9
Entrez	Chromosome 9
NCBI	Chromosome 9
UCSC	Chromosome 9
Full DNA sequences
RefSeq	NC_000009 (FASTA)
GenBank	CM000671 (FASTA)

Chromosome 9 is one of the 23 pairs of chromosomes in humans. People 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 and 4.5 percent of the total DNA in cells.

The following 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.

When simply saying "number of genes", in most cases, it refers only to "number of protein-coding genes".

The following are some of the genes located on chromosome 9:

The following diseases are some of those related to genes on chromosome 9: