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 evolutionary past. Traits that appear or disappear over time are not the ...

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 evolutionary past. Traits that appear or disappear over time are not the ...