Due to Louis Dollo, who came up with the Dollo's Law, once you lose something in the process of evolution, you dont get it back.
Humans dont have tail, birds and turtles dont have teeth.
Laws, in the science world means that it cannot ever be broken.
Well sucker, this one is no longer a law. Because through research, it was found that frogs actually lost their lower teeth about 200 million years ago but with this type of frog, the Marsupial Tree Frog, actually got its lower teeth back about 20 million year ago.
In general, frogs do have upper teeth, which means that it has the enamel and others to form teeth but why is it that this type of frog has the upper and lower? We do not know.
Maybe this might not actually hurt the law cause teeth arent really gone... just part of teeth.
What's my opinion on this?
Well, as mammals, we actually have tails cause all mammals have tails. We have them when we are in our mommy's stomach but is later mutated and got shorter and go back inside our body. That's why we you feel your backside, you can actually feel where it was.
Holy cow! what if we actually start to get our tail back? Funny right? And it would help with body temperature and regulations of something. Think about that. =P
Find the Article @ http://www.nytimes.com/2011/02/15/science/15obfrog.html?ref=science
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