genetic control of inter-neuron signals

[Doktor DynaSoar]

On 1 Apr 2004 11:32:27 -0800, QXUXBTVOTSAO at spammotel.com (Sandy
Hodges) wrote:

} Few people desire sex with a sibling. 

It's more correct to say that few people will admit to desiring sex
with a sibling. The data from a penile plethysmograph might say
otherwise.

I suspect that lack of a prevalence of sibling mating is probably due
more to pheromones. These reflect the immune system. People tend to be
more attracted by pheromones from someone with a different set of
immunities than people with a similar set of immunities. Sibling would
obviously have very similar immunities.