TLS Online TPP Program

#Question id: 15667


You set up the following dihybrid mapping cross in fruit flies. 
P e+e+ roro cq cq x ee ro+ro+ cq+cq+. After backcrossing F1 males to ee roro cq cq females, you get the following results: gray body, rough eyes, claret eyes 576; ebony body, smooth, red eyes 564. How can you explain this result?

#Unit 8. Inheritance Biology
  1. The genes are not linked.
  2. Crossing over does not occur in male drosophila
  3. These genes are X linked.
  4. A and B only