I've asked a similar question on Answers before, but it is still bothering me. Apparently we humans have a reptilian brain at the core, overlaid with a mammalian brain, on top of which is the neo cortex which is concerned with higher levels of thinking and consciousness. Assuming that we have these diverse elements in our brain as a result of evolution, how can a reptile evolve into a mammal? The reptile method of reproducing is by laying eggs which hatch outside the parent's body. Obviously as mammals we give birth to live young which we suckle. How can we evolve from one method of reproduction to the other by small incremental steps as the theory of evolution claims? Anything in between would not be viable as a way of creating the next generation, which would not survive and hence not breed. It offends my sense of logic, could someone please explain?
2007-10-16
23:08:56
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12 answers
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asked by
whenyou'restrange...
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