Answer: quantitative defect in globin synthesis.
- A structural defect of the globin chains
- B problem of oxygen transport only
- C quantitative defect in globin synthesis
- D defect limited to the red cell membrane
Correct answer: C. quantitative defect in globin synthesis
Explanation: Thalassemia is a quantitative disorder in which fewer globin chains are made, whereas sickle-cell anaemia is a qualitative (structural) defect of the globin molecule.
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.
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