Question

In fruit flies, the recessive pr and cn mutations cause brown and bright-red eyes, respectively (wild-type flies have brick-red eyes). The double mutant pr-cn combination has orange eyes. An F1 female who is wild-type is crossed to an orange-eyed male. Their F2 progeny have the following distributions:

Answer 1

| Wild Type | 8 |

| Brown | 241 |

| Bright-Red | 239 |

| Orange | 12 |