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🔬 Biology  ·  Principles of Inheritance and Variation  ·  NEET

The chromosomal theory of inheritance was proposed by:

Answer: Sutton and Boveri.

  • A Morgan and Sturtevant
  • B Watson and Crick together
  • C Beadle and Tatum jointly
  • D Sutton and Boveri

Correct answer: D. Sutton and Boveri

Explanation: Sutton and Boveri independently proposed that chromosomes carry the hereditary factors and that their behaviour parallels Mendel's laws.

Monohybrid Cross: Tt x TtParent 1 (Tt)Parent 2 (Tt)gametes: T, t (from each parent)TtTtTTTtTtttRatio 1 TT : 2 Tt : 1 tt (3 tall : 1 short if T = tall is dominant)

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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