Explain the difference in the results of the simulation showing selection to the simulation favoring hetero zygotes?

Answer 1

Well, first, we weren't in the lab and don't have access to the 2 simulations.

Second, the question doesn't make much sense since if there is "favoring" based on genetics (heterozygotes) then there is selection. So both simulations - as described - would involve selection, but the question suggests that only the first does.

In heterozygote advantage, the heterozygote is more fit than either homozygote. For example, in regions where malaria is prevalent, heterozygotes for the sickle cell allele are more fit than either of the homozygotes: homozygotes for the sickle cell allele have sickel cell disease and homozygotes for the normal allele have no resistance to malaria --- heterozygotes have some resistance to malaria while not having sickle cell disease. But it is still selection that operating, based on fitness.

Source(s):BS in Biology; university biology tutor

• 3 weeks ago