cm0002@toast.ooo to Science@mander.xyz · 3 天前Why we have two nostrils instead of one big holewww.popsci.comexternal-linkmessage-square14fedilinkarrow-up159arrow-down10
arrow-up159arrow-down1external-linkWhy we have two nostrils instead of one big holewww.popsci.comcm0002@toast.ooo to Science@mander.xyz · 3 天前message-square14fedilink
Bilateral symmetry, hox genes.