Question:
Which of the following group shows ZW-ZZ type of sex determination?
Which of the following group shows ZW-ZZ type of sex determination?
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The ZW-ZZ system is typically found in birds and some reptiles. Females have ZW chromosomes, and males have ZZ chromosomes.
Updated On: Nov 10, 2025
- Pigeon, Parrot, Sparrow
- Parrot, Bat, Fowl
- Bat, Fowl, Crow
- Sparrow, Fowl, Cat
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The Correct Option is C
Solution and Explanation
Step 1: Understanding ZW-ZZ sex determination.
In ZW-ZZ type of sex determination, females have a ZW chromosome pair, while males have a ZZ pair. This system is found in some birds and reptiles.
Step 2: Analyzing the options.
(1) Pigeon, Parrot, Sparrow: Incorrect. This group does not follow the ZW-ZZ system.
(2) Parrot, Bat, Fowl: Incorrect. Although parrots and fowls follow the ZW-ZZ system, bats follow XY sex determination.
(3) Bat, Fowl, Crow: Correct. This group includes species that follow the ZW-ZZ sex determination system.
(4) Sparrow, Fowl, Cat: Incorrect. This group includes species that do not all follow the ZW-ZZ system.
Step 3: Conclusion.
The correct answer is (3) Bat, Fowl, Crow, as these species exhibit ZW-ZZ type of sex determination.
In ZW-ZZ type of sex determination, females have a ZW chromosome pair, while males have a ZZ pair. This system is found in some birds and reptiles.
Step 2: Analyzing the options.
(1) Pigeon, Parrot, Sparrow: Incorrect. This group does not follow the ZW-ZZ system.
(2) Parrot, Bat, Fowl: Incorrect. Although parrots and fowls follow the ZW-ZZ system, bats follow XY sex determination.
(3) Bat, Fowl, Crow: Correct. This group includes species that follow the ZW-ZZ sex determination system.
(4) Sparrow, Fowl, Cat: Incorrect. This group includes species that do not all follow the ZW-ZZ system.
Step 3: Conclusion.
The correct answer is (3) Bat, Fowl, Crow, as these species exhibit ZW-ZZ type of sex determination.
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