Question

Which of the following statements is totally wrong about natural selection?

• A. In disruptive selection the two peaks are formed and showing the evolution of sub populations
• B. In direction selection the peak shift in one direction due to the selection of individuals with mean character values.
• C. When extreme phenotype are favoured by nature over average phenotypes it result in disruptive selection
• D. Average phenotypes are selected over extreme phenotypes is stabilizing selection

Answer 1

The correct option is A In disruptive selection the two peaks are formed and showing the evolution of sub populations

The disruptive selection also called diversifying selection, describes changes in population genetics in which extreme values for a trait are favored over intermediate values. Two peaks are formed but no sub-population is formed in this case. Directional selection is a mode of natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype. Stabilizing selection is the opposite of disruptive selection. Instead of favoring individuals with extreme phenotypes, it favors the intermediate variants.

So, the correct answer is, 'In disruptive selection, the two peaks are formed and showing the evolution of subpopulations'.