Chapter 6.3, Problem 2COMQ

Answer the multiple-choice questions based on the following crosses:

Parental generation: True-breeding flies with red eyes and long wings were crossed to flies with white eyes and miniature wings. All ${\text{F}}_{\text{1}}$ offspring had red eyes and long wings.

The ${\text{F}}_{\text{1}}$ female flies were then crossed to males with white eyes and miniature wings. The following results were obtained for the ${\text{F}}_{\text{2}}$ generation:

129 red eyes, long wings

133 white eyes, miniature wings  

71 red eyes, miniature wings  

67 white eyes, long wings

The recombinant offspring of the ${\text{F}}_{\text{2}}$ generation were produced by crossing over that occurred

a. during spermatogenesis in the parental generation males.

b. during oogenesis in the parental generation females.

c. during spermatogenesis in the ${\text{F}}_{\text{1}}$ males.

d. during oogenesis in the ${\text{F}}_{\text{1}}$ females.