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NEETZoologyPrinciples of Inheritance and Variation

Match List I with List II regarding the selfing of a pea plant with Yellow Round seeds. List I (Progeny phenotypes upon selfing) List II (Parental Genotype) (A) Only Yellow Round progeny (I) YyRr (B) Yellow Round and Green Round progeny (II) YYRr (C) Yellow Round and Yellow Wrinkled progeny (III) YyRR (D) Yellow Round, Yellow Wrinkled, Green Round, Green Wrinkled progeny (IV) YYRR Choose the correct answer from the o

Options

  1. A(A)-(IV), (B)-(II), (C)-(III), (D)-(I)
  2. B(A)-(I), (B)-(III), (C)-(II), (D)-(IV)
  3. C(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
  4. D(A)-(IV), (B)-(III), (C)-(II), (D)-(I)

Correct answer

D. (A)-(IV), (B)-(III), (C)-(II), (D)-(I)

Step-by-step solution

When a plant is selfed, the appearance of a recessive trait in the progeny indicates that the parent must be heterozygous for that trait. If only the dominant trait appears, the parent is homozygous dominant for that trait. (A) Only Yellow Round progeny: The parent breeds true for both dominant traits, meaning it is homozygous for both (YYRR). (B) Yellow Round and Green Round progeny: Segregation occurs for seed colour (producing green, yy) but not for seed shape (all remain round). The genotype is YyRR. (C) Yellow

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