Question

Match the correct numbers regarding the inheritance of human skin colour.
Number of different types of gametes produced by multialleles Total number of different combinations in F$_2$ generation Number of different phenotypes in F$_2$ generation

• A. 64 8 7
• B. 7 8 64
• C. 8 64 7
• D. 7 64 8

Hint:

Polygenic traits show continuous variation.

Answer 1

The Correct Option is C

Step 1: Understanding polygenic inheritance.
Human skin colour is controlled by three pairs of polygenes showing additive effect.
Step 2: Calculations.
Number of gametes = $2^3 = 8$
Total combinations in F$_2$ = $8 \times 8 = 64$
Number of phenotypes = $2n + 1 = 7$
Step 3: Conclusion.
Thus, the correct matching is 8, 64, 7.