[gore3000]

Oh, to account for those birth defects I keep bringing up

There's a very simple answer to that which you will not like - birth defects do not prove evolution. Sometimes (very seldom, but it does happen) humans are born with two heads. Kindly tell us from what ancestry such a defect came from.

[Junior]

Big difference there, bubba. "Two-headed" humans, cows, frogs, whatnot, are the result of failed twinning. This more commonly results in Siamese Twins. Whales born with legs are the result of a long dormant gene being switched back on accidentally. The question is why, if whales have always been whales, do they have a gene for legs?

I, unfortunately, do not hold out hope for your comprehension of the differences in the above paragraph, as your actual knowledge of evolution seems to be woefully lacking.

[Virginia-American]

There's a very simple answer to that which you will not like - birth defects do not prove evolution.

The particular defect I keep bringing up is the whale with legs. Were the genes for legs in the whale's parents? Why?

Sometimes (very seldom, but it does happen) humans are born with two heads.

Obviously, from their parents. There are no hidden genes being expressed here; the fetus devloped improperly. The case with the whale is different, in that there is no explanation, besides descent from a terrestial ancestor, for why those genes are present at all.