gedaliyah@lemmy.world to Today I Learned@lemmy.worldEnglish · 6 months agoTIL humans are the only animal with a chin. We aren't sure why.www.smithsonianmag.comexternal-linkmessage-square148fedilinkarrow-up1494arrow-down114cross-posted to: til@lemmy.catodayilearned@lemmit.online
arrow-up1480arrow-down1external-linkTIL humans are the only animal with a chin. We aren't sure why.www.smithsonianmag.comgedaliyah@lemmy.world to Today I Learned@lemmy.worldEnglish · 6 months agomessage-square148fedilinkcross-posted to: til@lemmy.catodayilearned@lemmit.online
minus-squareSuddenDownpour@sh.itjust.workslinkfedilinkEnglisharrow-up2·6 months agoNo “till”, plenty of living beings have vestigial elements that were positive at some point of their history, yet no longer are, but are still maintained because there isn’t evolutionary pressure to get rid of them.
minus-squareSuddenDownpour@sh.itjust.workslinkfedilinkEnglisharrow-up2arrow-down1·6 months agoHomo Sapiens develop a mutation XYZ that makes them not be attracted towards Neanderthals -> Neanderthals go extinct -> XYZ is NOW vestigial.
No “till”, plenty of living beings have vestigial elements that were positive at some point of their history, yet no longer are, but are still maintained because there isn’t evolutionary pressure to get rid of them.
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Homo Sapiens develop a mutation XYZ that makes them not be attracted towards Neanderthals -> Neanderthals go extinct -> XYZ is NOW vestigial.
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