Question

Human skin colour is an example of

• A. Mendelian Inheritance
• B. Polygenic Inheritance
• C. Incomplete Dominance
• D. Codominance

Hint:

Polygenic inheritance involves multiple genes influencing a single trait, such as skin color, height, or eye color in humans.

Answer 1

The Correct Option is B

Step 1: Human skin color is determined by multiple genes, with each gene contributing to the final phenotype. This type of inheritance is called polygenic inheritance, where multiple genes influence a single trait.

Step 2:
- (A) Mendelian inheritance involves single-gene traits, such as flower color in pea plants.
- (C) Incomplete dominance involves a blending of traits, such as flower color in certain plants.
- (D) Codominance occurs when both alleles are expressed equally, such as in AB blood type.
Conclusion: Skin color is an example of polygenic inheritance.