"John Edser"  wrote in message
news:b9h68p$219m$1{at}darwin.ediacara.org...
>
> RT:-
> A man produces sperm, some of which are genetically different from others
he
> produces. After ejaculation, why don't the sperm act selfishly and compete
> for the egg?, instead some stay and fight off rival sperm!
>
> JE:-
> The question above is of the upmost importance.
> I cannot stress enough, its logical importance
> to evolutionary theory.
>
> The reason why at least 3 classes of sperm
> exist: inseminators, killers and blockers
> (like eusocial bees they change function
> with age) is because each sperm is just a sub
> part of one, selectable, fertile organism
> and thus, it only has a sub fitness.

No need to muddy the waters by the use of "fertile". I suggest
use "fit
enough?" in place of "fertile". Be sure to not forget to
include the "?"
though!

Thereof the relevance and usefulness of separating-out the selective
"signals" from the selective "noise" they call drift by
analysing, as far as
possible, from a perspective of: types and discernable *combinations* of
selective life-situations (as in "lived/been in"  by individuals);

IMO especially importantly is it to be able to imagine the realistic
category of "evolutionary pressure combination" that generated the
"attractor" towards 'AEVASIVEly'  ambi-advantageous adaptations.

P
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