Papilio machaon - osmetrium

Esther Cornelius JayAndEstherC at webtv.net
Tue Mar 23 14:03:21 EST 1999


John: I agree that there are many mechanisms for genetic difference.
'natural variation' is an easily recognisable term, but given the
statistical odds of any one of them becoming dominant through random
selection, something has to be working in their favor.
Bill


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