Well, fucking with the body's internal clock does reduce neurogenesis, but saying smaller brains is a pretty large jump from neurogenesis. :p
And no, 5-10 thousand years is not enough time to adjust, because the 24-hour cycle is hardwired from when life started. There is a direct connection between DNA transcription and the biological cycles, so unless a mutation popped up or some special epigenetics are happening, I don't see any adaptation within that frame of time.
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branchandroot
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Date: 2010-12-14 01:50 pm (UTC)And no, 5-10 thousand years is not enough time to adjust, because the 24-hour cycle is hardwired from when life started. There is a direct connection between DNA transcription and the biological cycles, so unless a mutation popped up or some special epigenetics are happening, I don't see any adaptation within that frame of time.