On 04 Nov 2015, at 22:38, John Mikes wrote:
About the biological makeup of reproducing Brent Maker wrote:
> >Biological theory says that sexual reproduction should halve the
> >fitness of the organism as compared with asexual (or
parthenogenetic)
> >reproduction, so asexual reproduction should be the norm (as it
is in
> >bacteria).
>
> But does it halve the reproductive chances of a gene; or does it
> give it more chances of survival?
>
And Russell replied.
Halves it, because its a 50/50 lottery whether the gene from the
female or the gene from the male is expressed in the offspring.
---------------------
The offspring is not a quantitative distribution of the (fe)-male
genes. it is an unqualified mixture of those PLUS earlier
generations' genetic effects.
JM
I agree. It makes sex accelerating evolution a lot. Sex becomes an
"intelligent" dialog made at the molecular level, and this without
adding any non mechanist magic in the process. We can be sure that
there is a complex hierarchy of meta and meta-meta-goals in the
evolution of life. I think we do have evidence that with sex, the
evolution of species has been accelerated.
Bruno
On Tue, Nov 3, 2015 at 5:30 PM, Russell Standish <[email protected]
> wrote:
On Tue, Nov 03, 2015 at 02:05:53PM -0800, Brent Meeker wrote:
> >
> >Biological theory says that sexual reproduction should halve the
> >fitness of the organism as compared with asexual (or
parthenogenetic)
> >reproduction, so asexual reproduction should be the norm (as it
is in
> >bacteria).
>
> But does it halve the reproductive chances of a gene; or does it
> give it more chances of survival?
>
Halves it, because its a 50/50 lottery whether the gene from the
female or the gene from the male is expressed in the offspring.
Of course, the same logic would indicate that incest should be very
evolutionary advantageous - which gives a potent clue as to what's
going on.
--
----------------------------------------------------------------------------
Prof Russell Standish Phone 0425 253119 (mobile)
Principal, High Performance Coders
Visiting Professor of Mathematics [email protected]
University of New South Wales http://www.hpcoders.com.au
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