▲ 685 ▼ Fingies (mander.xyz) submitted 4 months ago by fossilesque@mander.xyz to c/science_memes@mander.xyz 98 comments fedilink hide all child comments
[+] applebusch@lemmy.blahaj.zone 22 points 4 months ago (4 children) [deleted] permalink fedilink source parent hideshow 4 child comments replies: [–] ZombiFrancis@sh.itjust.works 8 points 4 months ago (2 children) Tl:dr = Because they haven't. Yet. Maybe. As far as we know. I think you've described it quite well. That's just evolutionary biology. Any adaptation requires some kind of pressure behind it. permalink fedilink source parent hideshow 2 child comments replies: [–] WildPalmTree@lemmy.world 3 points 4 months ago (1 child) Not pressure, just absence of negative effects. Pressure might help but is not required. And I use "absence" quite loosey-goosey. permalink fedilink source parent hideshow 1 child comment replies: [–] ZombiFrancis@sh.itjust.works 3 points 4 months ago Yes, and 'pressure' is used similarly. Think atmospheric pressure. It can lower and heighten, so a lack of pressure is low pressure, not the absence of it. permalink fedilink source parent [–] hirihit640@sh.itjust.works 2 points 4 months ago Though it's crazy that there can be such dramatic variation in bone structure and shape (eg humans vs horses vs bats), yet such homogeneity in the number of bones and their connections (arms connect to shoulders, which connect to spine, etc). Perhaps the genetic code for the number of bones and their connections, is more resiliant to mutation? permalink fedilink source parent
[–] ZombiFrancis@sh.itjust.works 8 points 4 months ago (2 children) Tl:dr = Because they haven't. Yet. Maybe. As far as we know. I think you've described it quite well. That's just evolutionary biology. Any adaptation requires some kind of pressure behind it. permalink fedilink source parent hideshow 2 child comments replies: [–] WildPalmTree@lemmy.world 3 points 4 months ago (1 child) Not pressure, just absence of negative effects. Pressure might help but is not required. And I use "absence" quite loosey-goosey. permalink fedilink source parent hideshow 1 child comment replies: [–] ZombiFrancis@sh.itjust.works 3 points 4 months ago Yes, and 'pressure' is used similarly. Think atmospheric pressure. It can lower and heighten, so a lack of pressure is low pressure, not the absence of it. permalink fedilink source parent
[–] WildPalmTree@lemmy.world 3 points 4 months ago (1 child) Not pressure, just absence of negative effects. Pressure might help but is not required. And I use "absence" quite loosey-goosey. permalink fedilink source parent hideshow 1 child comment replies: [–] ZombiFrancis@sh.itjust.works 3 points 4 months ago Yes, and 'pressure' is used similarly. Think atmospheric pressure. It can lower and heighten, so a lack of pressure is low pressure, not the absence of it. permalink fedilink source parent
[–] ZombiFrancis@sh.itjust.works 3 points 4 months ago Yes, and 'pressure' is used similarly. Think atmospheric pressure. It can lower and heighten, so a lack of pressure is low pressure, not the absence of it. permalink fedilink source parent
[–] hirihit640@sh.itjust.works 2 points 4 months ago Though it's crazy that there can be such dramatic variation in bone structure and shape (eg humans vs horses vs bats), yet such homogeneity in the number of bones and their connections (arms connect to shoulders, which connect to spine, etc). Perhaps the genetic code for the number of bones and their connections, is more resiliant to mutation? permalink fedilink source parent
