Why are mammals stuck at 4 limbs?
Why are mammals stuck at 4 limbs?
Thomas James
Connor Martin
>mammals
You mean vertibrates.
Isaiah Moore
No I mean mammals. Fuck off you pretentious cunt.
Adrian Lewis
>he thinks snakes have 4 limbs
Joshua Lewis
Because evolution is driven by random mutations that are then passed on because the organism successfully reproduces.
So, that means either it occurred and didn't successfully reproduce or it didn't occur and thus couldn't be reproduced.
Aiden Harris
We aren't "stuck" at 4 limbs. It's just that we have no need to evolve more as our environment isn't requiring it.
Owen Young
no the real reason is because once you evolve a structure it becomes very difficult to unevolve it.
You can normally only change parts of it's shape gradually.
Samuel Harris
Would the tail of a dog, cat, monkey etc qualify as a limb?
Jackson Harris
Because all terrestrial vertebrates have a common ancestor that was a fish with 4 lobed fins with a recognizable arrangement of bones thats immediately identifiable as having the same bones as all other vertebrate limbs. Like the Humorous/Femur the Radius and Ulna/tibia and fibula, the wrist bones, and phalanges.
Brody Ross
>Would the tail of a dog, cat, monkey etc qualify as a limb?
An appendage.