Thread:Nixeu/@comment-226878-20141116063152/@comment-24328089-20141215234039

"I believe man is descended from the Neanderthal."

Funny you should say this, because it's actually a misconception. Neanderthals and Humans both descended from Homo heidelbergensis.

"Spiders will always have eight legs."

Frogs are often born with extra legs due to radiation. If these legs were actually useful, they would be able to reproduce and spread the genes giving them extra legs onto their children.

"Dolphins will always have blow holes"

Also, funny you should say this. Because a blow hole is simply a nose that gradually moved up the face of the dolphin's ancestors. The ones that had a nose closer to the top of their bodies were less likely to drown and more likely to have kids and pass on their genes.