Question

In drosophila gene A and B are $10$ map unit apart on chromosome. A female Drosophila with genotype $\frac{AB}{ab}$ and male Drosophila with genotype $\frac{AB}{ab}$ were crossed. How many type of gametes are produced by female and male Drosophila respectively:

• A. $4types:2types$
• B. $2types:2types$
• C. $4types:4types$
• D. $4types:onetypes$

Answer 1

The correct option is C $4types:4types$

In drosophila, gene A and B are 10 map unit apart on chromosome. A female Drosophila with genotype ABab and male Drosophila with genotype ABab were crossed. Both the male and the female Drosophila produce four types of gametes which are AB, Ab, aB, and ab.

So the correct answer is '4 types: 4 types'.