Question

Total number of progeny of a dihybrid cross is 1280 in $F_2$ generation. How many are recombinants?

• A. 240
• B. 360
• C. 480
• D. 720

Answer 1

Answer: (C)

480

In a dihybrid cross, during F₂ generation 16 progeny are formed, in this, 10 progeny shows parental phenotypes, remaining 6 progeny shows new phenotypes. These are called recombinants. So, in the F2 generation 1280 progeny are formed, in this 800 progeny shows parental phenotypes and 480 progenies are recombinants.

So, the correct option is ‘480’.