Consider a locus in which the fitness of AA and Aa genotypes are greater than the fitness of aa genotype. In addition, this locus experiences forward mutation from the A allele to a allele. At this locus, the A allele:
a. will always go to fixation.
b. will always be lost.
c. will never go to fixation.
d. will never change.
e. None of the above.

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. c. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails have other functions,because prokaryotes don't have nuclei.