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NEETZoologyPrinciples of Inheritance and Variation

Match List-I with List-II regarding the mechanisms of sex determination and gametogenesis in different organisms. List-I List-II (A) Grasshopper (I) Female produces gametes with A + Z and A + W (B) Drosophila (II) Male produces gametes by mitosis (C) Bird (III) Male produces gametes with A + X and A + 0 (D) Honeybee (IV) Male produces gametes with A + X and A + Y Choose the correct answer from the options given below

Options

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

Correct answer

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

Step-by-step solution

In grasshoppers, the sex determination mechanism is of the XX-XO type. Males are heterogametic with only one X chromosome (XO) and produce two types of sperms: one with an X chromosome (A + X) and one without it (A + 0). In Drosophila, sex determination is of the XX-XY type. Males are heterogametic (XY) and produce two types of sperms: A + X and A + Y. In birds, sex determination is of the ZZ-ZW type. Females are heterogametic (ZW) and produce two types of ova: A + Z and A + W. In honeybees, sex determination is ba

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