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Bacteria Take Up Dead DNA, Scrambling Evolution
November 20, 2013
It's not just horizontal gene transfer that can obscure evolutionary history. Scientists have found bacteria recycling fragmented DNA from long-dead organisms. The impact on evolutionary theory could be substantial.
Unique “Orphan Genes” Are Widespread; Have No Evolutionary Explanation
November 19, 2008
We often hear about the similarities between genomes, but what about the differences? There’s a growing realization that groups of animals have genetic orphans – genes that are unique to that line (see 01/02/2003). These genes have no evolutionary homology or kinship to genes from other lineages. How did they arise? And what do they […]