Answer: polygenic inheritance.
- A polygenic inheritance
- B incomplete dominance
- C multiple allelism
- D pleiotropic control
Correct answer: A. polygenic inheritance
Explanation: Skin colour is a polygenic (quantitative) trait controlled by several genes, each adding a small additive effect to the phenotype.
Punnett square for a monohybrid cross between two heterozygous (Tt) parents, showing the 3:1 phenotypic ratio predicted by Mendel's Law of Segregation.
Concept context
Mendel's laws, inheritance patterns, DNA structure, and molecular biology. Core of NEET biology.
Read the full Principles of Inheritance and Variation notes →