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Talk:Counterexamples to Evolution (view source)
Revision as of 04:02, October 28, 2008
, 04:02, October 28, 2008→Chromosome example: comment
:::If we were to assume that I was incorrect on mutations sometimes providing benefits, I was still correct that mates with different numbers of chromosomes can still mate successfully, provided of course that they would have been able to produce viable offspring in the first place. That part alone is enough to disprove the point. As for mutations providing benefits, I am not saying that all mutations are beneficial, in fact most mutations involving extra chromosomes cause serious problems, especially in larger mammals (humans included). However plants tend to make better use of the kinds these kinds of mutations, take the F. chiloensis or the Beach Strawberry, It has 8x the number of chromosomes compared to wild type strawberries. Because of this, it produces larger fruit with more seeds. More seeds and larger fruit being an obvious advantage regarding reproduction. --[[User:ScottA|ScottA]] 23:53, 27 October 2008 (EDT)
:::If we were to assume that I was incorrect on mutations sometimes providing benefits, I was still correct that mates with different numbers of chromosomes can still mate successfully, provided of course that they would have been able to produce viable offspring in the first place. That part alone is enough to disprove the point. As for mutations providing benefits, I am not saying that all mutations are beneficial, in fact most mutations involving extra chromosomes cause serious problems, especially in larger mammals (humans included). However plants tend to make better use of the kinds these kinds of mutations, take the F. chiloensis or the Beach Strawberry, It has 8x the number of chromosomes compared to wild type strawberries. Because of this, it produces larger fruit with more seeds. More seeds and larger fruit being an obvious advantage regarding reproduction. --[[User:ScottA|ScottA]] 23:53, 27 October 2008 (EDT)
::::(edit conflict) Corry said "''This is why sickle cell anemia is most prominent in ethnicities from malaria-stricken parts of the world.''" Just because the sickle-cell mutation happened to produce a beneficial ''result'' in one case does not mean it is truly beneficial. Natural selection dictates that anything that is beneficial stays, and anything that does not ''immediately'' benefit an organism is thrown out. If there ever was a beneficial mutation, it would very quickly be passed among ''all'' members of a species. Since all of humanity does not have the sickle-cell trait, the mutation is, hands down, not beneficial when applied across a broad spectrum (which is what would have to occur in order for a species to evolve).