Re: Article: Parasite genes reveal long sexual history

From: Tim Tyler (tim_at_tt1lock.org)
Date: 02/05/05


Date: Sat, 5 Feb 2005 13:46:31 -0500 (EST)

Perplexed in Peoria <jimmenegay@sbcglobal.net> wrote or quoted:

> Incidentally, how does one calculate Hamilton's r (IBD) for offspring
> produced by selfing? It seems to me that r=1 between the parent
> and offspring. The odd thing is that reproduction by mitosis and
> reproduction by selfing give the same maximal value for r, even though
> offspring is genetically identical to the parent in the first case,
> and very different in the second case. Furthermore, two offspring
> produced independently by selfing from the same parent will only
> have r=0.5 between them, even though they both have r=1.0 wrt the
> parent. Is that right?

If r=1 for selfing two offspring are also going to be related by r=1.

I wouldn't like r=1 for selfing. I'd rather have r=0.75 for a
diploid organism - since that figure reflects roughly the
proportion of parental genes are going to get lost in each
offspring.

-- 
__________
 |im |yler  http://timtyler.org/  tim@tt1lock.org  Remove lock to reply.


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