Humans do not have tails, but do we have “what it takes” for a tail? Hens don’t have teeth, but they have the genes for it. With atavism, it is as if our genomes serve as archives of our ...

Related: What if humans had tails? According to Habib, bat-like wings would make more sense on humans. In this setup, the entire arm and hand would stretch out, creating that 20-foot wingspan.