Question 1

(Multiple Choice)

In the purple penguin,an allelic series occurs at the p locus on an autosome.All alleles affect the color of feathers: pd = dark-purple,pm = medium-purple,pl = light-purple,and pvl = very pale purple.The order of dominance is pd > pm > pl > pvl.If a pl/pvl female is crossed to a pd/pmmale,the ratio of phenotypes expected among the baby penguins would be:


A)2 dark:1 light:1 very pale.
B)2 dark:1 medium:1 light.
C)1 dark:1 medium.
D)1 dark:1 medium:1 light:1 very pale.
E)1 medium:1 light.

Answer

C