In guinea pigs, rough coat (R) is dominant over smooth (r),…
In guinea pigs, rough coat (R) is dominant over smooth (r), and black coat (B) is dominant over white (b). A heterozygous rough, homozygous white haired male is crossed with a homozygous smooth, heterozygous black one: a) Draw a Punnett square and describe the phenotypes of the progeny. (2) b) What proportion of the progeny will have rough, white hair? (1) c) What proportion of the progeny are homozygous for smooth hair? (1) You must show all your work to obtain full credit.