Question

Within a population of butterflies, the color brown (B) is dominant over the color white (b). 40% of the butterflies are white. Given this information, choose the correct answers that will properly identify the values for dominant and recessive alleles and genotypes of the population.

What is the value for the dominate allele of the example above?

Question options:

0.8


0.40


80%


0.60

Answer 1

The value for the dominant allele in this example is 0.60.

Step-by-step explanation:

For the given question, the dominance of the brown (B) allele over the white (b) allele shows that the B allele is dominant and the b allele is recessive.

Since brown is dominant, it must make up the rest of the population. Since 40% of the population is white, the remaining 60% must be brown. This means that the frequency of the dominant B allele is 0.6 or 60%.

Therefore, the correct answer is:

0.60