Re: Reproductive Selection

Treus wrote:


Treus wrote:

John Harshman wrote:


<snip>

Why, even if you were correct about all this, would that make evolution
without natural selection?


<snip>

The evolution of R(S1,x) to R(S2,x) where R(S1,S2)<R(S1,S1) requires
S1 to evolve contrary its advange under reproductive selection (which
acts on the post-mating capacity to generate offspring). What other
form of natural selection could govern such a development?

Your pseudo-math is unclear. What is this species x for?

We have covered this before. I'll summarize.

1. Selection acts on individuals; "reproductive selection" is an
artificial abstraction. If some characteristic is disadvantageous under
reproductive selection alone, that says nothing about whether it's
advantageous to the individual.

2. I have shown you a simple way in which reproductive incompatibility
can arise without any disadvantage in reproductive selection. Remember
the 2-locus model?

Incompatibility can arise as a byproduct of natural selection acting for
other purposes, and it can arise as a consequence of drift.

.

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  • Re: Reproductive Selection
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