Dihybrid Cross 9:3:3:1 Ratio — NEET Biology
📚 Practice ConceptThe ratio of 9:3:3:1 can be derived as a combination series of 3 yellow: 1 green, with 3 round: 1 wrinkled. This derivation can be written as follows:
Match List – I with List – II. (NEET 2023) List – I (A) Monohybrid Cross (B) Dihybrid Cross (C) Incomplete dominance (D) Test Cross List – II (I) 1 : 1 (II) 1 : 2 : 1 (III) 3 : 1 (IV) 9 : 3 : 3 : 1
View solution & NCERT explanation
Correct answer: A — (A)-(III), (B)-(IV), (C)-(II), (D)-(I)
Monohybrid Cross (A): F₂ phenotypic ratio is 3:1 → (III) Dihybrid Cross (B): F₂ phenotypic ratio is 9:3:3:1 → (IV) Incomplete Dominance (C): F₂ phenotypic ratio is 1:2:1 → (II) Test Cross (D): For a heterozygote crossed with a homozygous recessive, phenotypic ratio is 1:1 → (I)
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