In human beings, multiple genes are involved in the inheritance of
Correct answer: B. Skin colour
- A. Sickle-cell anaemia
- B. Skin colour
- C. Colour blindness
- D. Phenylketonuria
Explanation
Inheritance of complex traits in human beings often involves the influence of multiple genes. While specific genes play significant roles in these traits (e.g., HBB for sickle-cell anemia, MC1R for skin color, PAH for PKU), the overall inheritance of these traits is influenced by the interactions of multiple genes, genetic variations, and environmental factors. Skin color is a prime example of a complex trait determined by the interaction of many genes, highlighting the complexity of human genetics.
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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