Q1. Brown eye colour (B) is dominant and blue eye colour (b) is recessive. In one school, 128 students have brown eyes and 72 students have blue eyes (bb). Which of the following correctly represents the possible frequencies of each genotype?
(p + q = 1, p2 + 2pq + q2 = 1)

Q2. What fraction of offspring of the cross AabbDd x AaBbdd are expected to have the same phenotype as either one of their parents assume that all three genes are on different chromosomes?