The frequency of alleles in a population that is in hardy-weinberg equilibrium changes in each successive generation. is less important than the frequency of genotypes. shows evidence of the process of natural selection. remains the same over several generations.

Answer is

remains the same over several generations.

Explanation:

According to Hardy-Weinberg equilibrium, the allele frequencies in a large and randomly mating population remain the same over several generations if no evolutionary forces are operative.

Here, evolutionary forces are mutations, natural selection, gene flow, migration, etc. To keep the allele frequencies constant, the individuals of the population should exhibit random mating and there should not be any sexual selection for a mate.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

well, i believe that the answer is 2. : 3