Question

In a species of birds an observable trait is controlled by a single gene the gene only has two alleles and the dominant allele B exhibits complete dominance over the recessive allele b. The table below shows the number of individuals in the population over several generations that exhibit the dominant and recessive phenotypes that result from this gene. which of the following is a valid conclusion based on this data

1. The allele b is being selected against and is decreasing in frequency
2. The allele b is increasing in frequency.
3. The allele b is becoming more recessive.
4. The population is in Hardy-Weinberg equilibrium.

Answer 1

The allele b is being selected against and is decreasing in frequency.

Step-by-step explanation:

Based on the data provided, a valid conclusion is that the allele b is being selected against and is decreasing in frequency. This conclusion can be drawn because the number of individuals exhibiting the recessive phenotype is decreasing over several generations. Since the dominant allele B exhibits complete dominance over the recessive allele b, the decrease in individuals with the recessive phenotype suggests that individuals with the dominant phenotype have a higher fitness and are more likely to survive and reproduce.