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Dr. Mabuse
Septic Fiend
Sweden
9697 Posts |
 Posted - 07/19/2007 : 06:27:38 [Permalink]
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Originally posted by Dave W.
Originally posted by On fire for Christ
To Dave, my point was that this is a regular occurance and thus mundane. |
I may be having difficulties in identifying the referent of your "this," but a rebound from 1% males to 40% in ten generations is hardly a regular occurance for any sexually-reproducing population.
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Assuming the sexual distribution of the butterflies in question is 50% male and 50% female:
If 98% of the males in only one generation got wiped out, then the following generation should have a restored balance. As the off-spring should be 50/50.
This parasite must therefore work over several generations, and the genetic difference that makes a certain part of the male population survive isn't binary, but gradual.
That is why we see a gradual recovery of the male population over many generations.
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