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a_weak_child t1_iwao0n3 wrote

Most the comments on here are misunderstanding your question. To actually answer your question: it’s because wooly mammoths are much closer to us on a phylogenetic tree than dodos are. Dodos are birds, a closer ancestor to them is the dinosaurs. Wooly mammoths are mammals, and all mammals share a TON of DNA in common. This is why we find so many mammals so cute too :). Look up the phylogenetic tree!

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waylandsmith t1_iwat4ne wrote

I'm pretty sure you've misunderstood. I can see there being some ambiguity from the wording of the question, but the topic flair on the question is "paleontology", not "genetics" or "biology". I think it's safe to say they're asking about "having" DNA in the sense of having samples from it, not "having" DNA as in sharing DNA with those species.

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