[extropy-chat] Hybrids

[Kevin Freels]

I've actually been working on some research in this area. I'll dig it out
and reply offlist.
Kevin
----- Original Message ----- 
From: "David Lubkin" <extropy at unreasonable.com>
To: "ExI chat list" <extropy-chat at lists.extropy.org>
Sent: Thursday, January 29, 2004 3:12 PM
Subject: [extropy-chat] Hybrids


> No one responded to the question I posed a couple weeks ago, so I'll ask
> again. It was asked in a reply to a religious thread, so many people may
> have missed it.
>
> >How is it that a horse and a donkey -- different species, with different
> >numbers of chromosomes -- can produce offspring?  What are the limits of
> >cross-species mating, besides incompatible hardware, e.g., horse and
> >gerbil?  Given species x, y and gestational periods g(x) and g(y),
> >respectively, what will the gestational period of an x carrying an x/y
> >hybrid be?
>
> Beyond being interesting in their own rights, the limits of genetic
> differences that will produce fertile offspring without technological
> assistance are an important consideration in forthcoming human genemods.
>
> Just as I want some people living off-Earth in an environment that can be
> viably self-sufficient with primitive technology, I would prefer that
> humans not fracture into reproductively incompatible successor species.
>
>
> -- David Lubkin.
>
>
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