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NEETZoologyPrinciples of Inheritance and Variation

Match List I with List II regarding sex determination mechanisms. List I List II A. Grasshopper I. Male produces two types of gametes (X and Y) B. Drosophila II. Female produces two types of gametes (Z and W) C. Birds III. Male produces gametes with and without X chromosome Choose the correct answer from the options given below:

Options

  1. AA-I, B-III, C-II
  2. BA-III, B-II, C-I
  3. CA-III, B-I, C-II
  4. DA-II, B-I, C-III

Correct answer

C. A-III, B-I, C-II

Step-by-step solution

In Grasshopper, the mechanism of sex determination is of the XX-XO type. Males have only one X chromosome (XO) and produce two types of gametes, 50 percent with an X chromosome and 50 percent without an X chromosome. Therefore, A matches with III. In Drosophila, the sex determination mechanism is of the XX-XY type. Males have one X and one Y chromosome (XY) and produce two types of gametes, one with an X chromosome and one with a Y chromosome. Therefore, B matches with I. In Birds, the sex determination mechanism i

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