> Can anyone summarize current hypotheses about directed mutation? My
> impression from his talk was that Barry's attempts to disprove
> hypotheses had been so successful, he was basically left without one.
>> Mary Kuhner mkkuhner at genetics.washington.edu
I wouldn't dare summarize, but try:
Lenski & Mittler Science 259:188 (1993)
Foster J. Bact. 174:1711 (1992)
for two viewpoints.