Being King isn't all it's cracked up to be. Learn about the "royal disease" that haunts the descendants of Queen Victoria.
Where do apples come from? Simple question, right? A seed is planted, the seed grows into a tree, and the tree makes apples. Where do seedless grapes come from?
After all, for the basic body plan to change, not only do you need a random genetic mutation that results in a sixth finger, but that mutation must also provide an evolutionary advantage when it comes to reproduction.