What is the pattern of inheritance for polygenic trait?

Question

What is the pattern of inheritance for polygenic trait?

1. A. Mendelian inheritance pattern
2. B. Non-mendelian inheritance pattern (Correct answer)
3. C. Autosomal dominant pattern
4. D. X-linked recessive inheritance pattern

Correct Answer

Option B — Non-mendelian inheritance pattern

Detailed Solution & Explanation

The correct answer is Non-mendelian inheritance pattern.

Key Points

• Polygenic inheritance is a trait controlled by two or more genes (e.g. human skin colour, height).
• Because the phenotype is the additive effect of several genes (and often influenced by environment), it does not follow simple Mendelian ratios — it shows a non-Mendelian inheritance pattern.