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The 23 chromosome pairs, made up of 3 billion base-pairs, 22 chromosomes of which are autosomal and one which is an allosome, or sex chromosome.

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If a DNA letter is one of A,T,C and G, and there are 3 billion base pairs, why don't we say ...

If a DNA letter is one of A,T,C and G, and there are 3 billion base pairs, why don't we say that there are 6 billion letters in the genome? We do. Just like English has 26 letters while this pos …
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