Tumbling Genomes

[from Gary Cziko 920818.2240]

There's a article in the recent _Science_ (vol. 257, 14 August 1992, pp.
884-5, "Possible evolutionary role explored for 'jumping genes'") which I
thought at least Bill Powers and Greg Williams would find interesting.

It says:

"If at a certain time the suppressor genes were somehow turned off, the
accumulated variation could be unleashed, giving rise to dramatic
differences in a population over a short period of time and perhaps even
creating changes that could lead to new species."

So here is a possible mechanisms for the genome to "tumble" around a bit
when some intrinsic error is high, fitting in nicely with Bill's
speculations about evolution as a control process leading to punctuated


Gary A. Cziko Telephone: (217) 333-4382
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