For example, think of rabbits in the countryside. Do you ever see mid-sized ones, or are they mostly small and large with little in between?
What about three eyed rabbits? Or one eyed rabbits? Where is their branch? Or two headed toads? They reproduce.
Given the millions of years of mutating, there should be three headed two eyed frog-rabbits hopping around. Yet all animals have two eyes. Pleas don't tell me spiders have eight. The mutation is turned off by design. Otherwise it seems every litter would have new mutations.
Last reply on this. I don't know enough about it to make intelligent conversation.