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Chromosome 19
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<p>Chromosome 19 is one of the 23 pairs of <a href="/facts/Chromosome/FRGf11FC">chromosomes</a> in <a href="/facts/Human/rlcTENsr">humans</a>. People normally have two copies of this chromosome. Chromosome 19 spans more than 61.7 million <a href="/facts/Base_pair/xmPpPQ9W">base pairs</a>, the building material of <a href="/facts/DNA/nB89Iauz">DNA</a>. It is considered the most <a href="/facts/Gene_density/qbsgmhT5">gene-rich</a> chromosome containing roughly 1,500 genes, despite accounting for only 2 percent of the human genome. </p>