According to the figure below, the r allele is less frequent in generation 2 of this flower population.
The frequency of r decreases in this population because

Question

According to the figure below, the r allele is less frequent in generation 2 of this flower population. 
The frequency of r decreases in this population because

Quizplus · Accepted Answer

The decrease in frequency of the r allele is likely due to genetic drift, which is the random fluctuation of allele frequencies in a population over time. This can occur due to chance events such as random mating or fluctuations in population size. Thus, option A is the most likely explanation for the observed decrease in the frequency of the r allele in generation 2. The other options do not adequately explain this observation.

According to the Figure Below, the R Allele Is Less