RE: Speechless
July 14, 2016 at 10:37 am
(This post was last modified: July 14, 2016 at 10:43 am by The Grand Nudger.)
(July 14, 2016 at 7:52 am)RoadRunner79 Wrote: I'm curious about your statement I bolded above. How did you come to that conclusion? My understanding of natural selection is that it is a filtering mechanism not a creative one. That variations which are more likely to cause death or reduce reproduction are removed from the gene pool. There are some who deal in population genetics who question the limits of natural selection. How much of a role does the size of the population affect natural selection? And also, how much of an advantage, is required in order for natural selection to become a contributing factor in the non-diversification of genetic information.
A speciation event is simply the point of no return, the sum total of all divergence between two given populations isolated and solidified by selection. Population a can/will no longer breed with population b. This is what is meant by the word species. Mutation creates the individual, the "filtering method" creates the -species-.
Pretty straightforward, eh?
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