Scientists are studying why sex chromosomes evolve rapidly.
Apparently the genes for sexual development (as a male or female) are quite conserved, but the sexual determination genes evolve rapidly. This seems to be because certain traits on autosomes can be more advantageous in one of the sexes, and so it would be beneficial to make that autosome a new sex chromosome.
Interesting!
XY XX
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hi mr.olson. i can't log onto school loop for some reason. i needed to tell you that i posted my blog on the "give me five" presentation for extra credit. i went to the san mateo library for it. :]
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