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From: Steve Drew <firstname.lastname@example.org>
Date: Tue, 14 May 2002 22:17:28 +0100
Subject: Re: pls direct me to a memetics list <eom>
> Hi Ray
>that sub heading.
> I agree.
> > Variation is a good topic. A discussion of the different ways that
> > variation is introduced in memetic systems would be interesting.
> > random variation is not even seen in genetics, but memes seem to get
> > varied using a number of different mechanisms.
> I thought that the calculations for the 'Eve theory' were based upon
> idea that there was some random variation in the mitochondrial DNA?
That was an overly broad statement on my part. I probably should have
said MOST of the variation. I was thinking in terms of higher level large
segment manipulation of DNA through crossing-over and jumping genes. I
don't think crossing over occurs in mitochondria but I'm not sure about
> Secondly, what part does radiation play if not random variation.?
The key is the word 'random'. While some variation in memes comes about
because of purely random errors in reproduction, I think we can say that
much more of it comes about through more directed variation. So for
example if someone gave you a new wrench that was improved by having a
better gripping surface and you wanted to improve it you would be more
likely to introduce additional variation in the gripping surface rather
than painting smiley faces on it.
I like to think of this as directed pre-reproductive variation and
selection. Others have referred to it as 'Lamarckian'.
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