In chickens, two pairs of alleles determine comb shape, R, r and P,p. RR or Rr results in rose comb, whereas rr produces single comb. PP or Pp produces pea comb and pp produces single comb. A couple has three girls. Suppose you would like to have a family consisting of two girls and a boy.
Segregation of alleles can occur at either of two stages of meiosis.
Name the two stages and explain what happens in each of them. A brown spotted rabbit is mated to a solid black one, and all the offspring are black spotted. State the colors of the offspring of the following crosses in peas. When two long-winged flies were mated, the offspring included 77 with long wings and 24 with short wings. Mary claimed that John was the father of her son Ben.