Figure:
-In the figure shown here,flower color of a population is distributed in a bell-shaped normal curve.If the white flower color increases in frequency in the population,this would illustrate
A) stabilizing selection.
B) disruptive selection.
C) directional selection.
D) genetic drift.

Question

Figure: 
-In the figure shown here,flower color of a population is distributed in a bell-shaped normal curve.If the white flower color increases in frequency in the population,this would illustrate
A) stabilizing selection. 
B) disruptive selection. 
C) directional selection. 
D) genetic drift.

Quizplus · Accepted Answer

Directional selection occurs when selection pressures favor individuals at one end of the distribution curve, causing the curve to shift in that direction. In this case, an increase in frequency of white flower color would shift the curve to the right or left, indicating directional selection towards that color. Stabilizing selection maintains the current distribution, while disruptive selection favors individuals at both ends of the distribution. Genetic drift is a random fluctuation in allele frequencies, and is not related to selection pressures.

Figure: -In the Figure Shown Here,flower Color of a Population Is