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+ - Mammalian genomes are shrinking->

Submitted by mmmscience
mmmscience (1450939) writes " Unlike their leafy and hairless counterparts, mammals have contracting genomes. It is due to a lack of new transposable elements, those lovable jumping genes that viruses dump into the genomic code. While a human's DNA is still made up of 45% of transposable elements, they are mostly very old. Natural selection has seen mammals incorporate fewer new transposable elements than plants and nonmammals."
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Mammalian genomes are shrinking

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