In article <1991Sep20.211233.3532 at husc3.harvard.edu> rice at husc9.harvard.edu (Ken Rice) writes:
>>3. Exaptation -- A trait that *isn't* adaptive is seized by selection
> for another purpose. Example: Over time, one of a pair of
> duplicated genes acquires a new function owing to natural selection.
> Duplicates of the cytoskeletal actin gene became the genes for
> cardiac and striated muscle actins. Your bee can cough up as
> much utterly useless wax as she likes, so long as her reproductive
> success (co-constituted with that of her queen, remember) is not
> thereby decreased.
>>I think of George Williams as the person who first wrestled with
>this question in a sophisticated way, although as Alan Rogers
>points out, the problem is much older. E. Vrba and S. Gould
>more or less invented the idea of exaptation.
> Ultimately these 'atomic instincts' are incorporated into the
genome as part of the 'wiring diagram' for the nervous system.
Maybe we shouldn't be doing a GEnome project, but rather a
BEEnome project, since bees have a simpler nervous system,
mayve we could actually locate the genetic loci which encode
hive-building?????
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-----^BEEHIVE Behaviour locus for Bees (29K basepairs)-----------
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---^--Human Higher Reasoning Engine Locus (127 pairs)
