How birds drop ‘unnecessary’ genes can help us understand evolution

Humans, the latest tally suggests, have approximately 21,000 genes in our genome, the set of genetic information in an organism. But do we really need every gene we have? What if we lost three or four? What if we lost 3,000 or 4,000? Could we still function? Humans have variation in their genomes, but the […]

Source: How birds drop ‘unnecessary’ genes can help us understand evolution

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