page_title: Chromosome 9
hierarchical_section_title: Chromosome 9
caption_attribution_description: English: Human male Karyotype after G-banding. Chromosome 9 highlighted.
context_page_description: 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 and represents between 4 and 4.5 percent of the total DNA in cells.
context_section_description: 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 and 4.5 percent of the total DNA in cells.
caption: Chromosome 9 pair
   in human male karyogram.
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