Part A: Couple 1 comes into your office. The husband has normal vision; the wife is heterozygous for the color-blindness allele. What percentage of Couple 1’s male offspring will be color blind? What percentage of their female offspring will be color blind?Part B: Couple 2 comes into your office. The […]

Pyrethrum is an African plant that develops daisy-like flowers with white petals and yellow centers. The chemical pyrethrin is produced in large amounts in the flower buds. Pyrethrin is a very strong poison that shuts down the nervous system of insects. This chemical is used as spray to kill insects […]

Question: In humans the presence of chin and cheek dimples is dominant to the absence of dimples, and the ability to taste the compound PTC is dominant to the inability to taste the compound. Both traits are autosomal, and they are unlinked. The frequencies for dimples are D = 0.62 and […]

Mutations in the rII region of a bacteriophage T4 prevent its growth on E. coli strain K. You obtain numerous mutations in this region and want to determine how many genes are located there. You perform double infections of E. coli K with the different pairwise combinations of mutations both […]