Within a population of butterflies, the color brown (B) is dominant over the color white (b). And, 29% of all butterflies are white.
Calculate the frequency of homozygous dominant individuals.
a
25%
b
42%
c
22%
d
63%
c. 22%
To calculate the frequency of homozygous dominant individuals, we first need to calculate the frequency of heterozygous individuals. Since 29% of all butterflies are white, the frequency of the bb genotype (homozygous recessive) is 0.29. Therefore, the frequency of the Bb genotype (heterozygous) can be calculated as 2 * sqrt(0.29) = 0.96 (rounded to 2 decimal places).
Now, we can calculate the frequency of the BB genotype (homozygous dominant) by subtracting the frequencies of bb and Bb genotypes from 1:
1 - 0.29 - 0.96 = 0.75
Therefore, the frequency of homozygous dominant individuals is 75%, which is equivalent to 75/100 = 75%.