I saw this, and thought it was good. But this answer caught my eye
“If we came from monkeys then why are there still monkeys?”
Let me ask you this: If you came from parents, why are there still parents?
because it’s not a good analogy at all (though Phil improves the answer further down), but, mostly, because @Brainspore in a comment here yesterday had a much better variation that had stuck in my mind:
if (for example) you are addressing a light-skinned American: “You are descended from Europeans, but there are still people in Europe.”
