For a gene that determines wing color in butterflies, there are three possible genotypes: BB (blue wings), bb (white wings), and
Bb (white wings with blue blotches). A sample of 100 butterflies was collected, and the following was observed: Wing Color Number of Butterflies
blue 60
white with blue blotches 30
white 10
What is the frequency of the Bb genotype in this population if it is in Hardy-Weinberg Equilibrium?
Answer: The frequency of the b allele is calculated as follows: since there are 2 alleles in each organism, total number of genes is 200. The number of white alleles is 10*2+30 (since there are 2 copies of the alleles in white organisms and 1 copy of the b allele in the white wings with blue blotches). So the total number of white alleles is 20+30=50 white alleles. The frequency of the white allele is then 0.25. So the frequency of the blue allele is 1-0.25=0.75. Since heterozygous term is 2*p*q, the frequency of the Bb genotype is 2*0.25*0.75=0.375. Hope that helped!
the part that is labeled y helps the plant get water, since plants arent like us they need to have something in their cell to help them get water because they can't just get up and go get a drink like us.
