Could animals that are related but separated by vast distances be used as an example as well? Like the black swan, or even trees and crops?
Comment on Why do different ethnicities/races look different?
Nemo@slrpnk.net 2 weeks ago
Without the evolutionary pressure to maintain high melanin levels in the skin, and possibly also from interbreeding with Neanderthaal, European people’s got paler.
Someone mutated to have eyes that were paler and more sensitive to light, which was useful during the longer nights further north, and that mutation spread.
So it’s a bit of both.
MojoMcJojo@lemmy.world 2 weeks ago
rtxn@lemmy.world 2 weeks ago
Elephants. African elephants have large ears to assist in maintaining their body temperature. Asian elephants that migrated farther north evolved smaller ears because the evolutionary pressure wasn’t as significant.
RedditRefugee69@lemmynsfw.com 2 weeks ago
Put differently (so as not to imply high melanin is fundamentally superior):
Someone mutated to have lower melanin levels in their skin, which was useful to absorb more sunlight for Vitamin D production further north, and that mutation spread.