NEET Biology question
True-breeding red-eyed *Drosophila* flies with plain thoraxes were crossed with pink-eyed flies with striped thoraxes. The F1 flies were then test-crossed against the double recessive. The following F2 generation resulted: 80 (red eye, plain thorax), 16 (red eye, striped thorax), 12 (pink eye, plain thorax), 92 (pink eye, striped thorax). What percentage of recombinants resulted from the test cross?
Answer: (B)
Solution
The parental-type classes are red-eye/plain-thorax (80) and pink-eye/striped-thorax (92), matching the original parental combinations; the recombinant classes are red-eye/striped-thorax (16) and
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account