New species can't arrise suddenly because the genetic variations occur slowly, but how come I hear biologists say that we have observed macro evolution?
Also doesn't rapid evolution happen sometimes like the color or size of the beak of the birds changing over only one generation? Could someone explain and give me examples of this?
Also doesn't rapid evolution happen sometimes like the color or size of the beak of the birds changing over only one generation? Could someone explain and give me examples of this?