RE: Evolution: Abrupt Changes
December 26, 2016 at 12:38 pm
(This post was last modified: December 26, 2016 at 12:46 pm by The Grand Nudger.)
(December 25, 2016 at 10:12 am)Chas Wrote:(December 25, 2016 at 3:55 am)Rhythm Wrote: Not always. Brassicaraph is a divergent hybrid -genera- that only took two generations to produce.
If you mean Brassicoraphanus, it is an artificially hybridized organism so it hardly qualifies as an example of rapid speciation.
Artificial selection is still selection. Speciation is speciation. They didn't have fancy gene editing schemes pre-war.... it simply shows what the underlying biology is capable of, given the right conditions. The question of whether or not rapid or abrupt speciation can occur, either on human timescales or the more common geological timescales is a resounding and well evidence yes. The prospects of survival for those novel new species, however, looks grim. We have no idea how many hybrids may have happened out in the field. We do know that nearly all of them will fail to establish a population due to a variety of factors.
@Agents of Darwin
LOL, I know I took my secret oath, lol. People sometimes get hung up on the "artifical" bit, I think. It's linguistic, we take it to make fake. That's not what it refers to in the context of evolutionary theory, even if that's how the words usage has evolved over time. Helps to remember artificial as in artificier.
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