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ZZ/ZW Type of Sex Determination MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

Quick Facts

Sex Determination: ZW Female & ZZ Males Type is considered one of the most asked concept.
7 Questions around this concept.

Solve by difficulty

MEDIUM

In the following questions, a statement of assertion (A) is followed by a statement of reason (R)

(1) If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark A

(2) If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark B

(3) If the Assertion is a true statement but the Reason is false, then mark C

(4) If both Assertion and Reason are false statements, then mark D

Assertion: In ZW female and ZZ male type of sex determination, females have a pair of ZW sex chromosomes, while males have a pair of ZZ sex chromosomes.

Reason: This type of sex determination is based on the presence or absence of sex chromosomes, with the ZW female and ZZ male type of sex determination being one of the many ways in which sex can be determined in various species.

Both Assertion (A) and Reason (R) are the true and Reason (R) is a correct explanation of Assertion (A).

Both Assertion (A) and Reason (R) are the true but Reason (R) is not a correct explanation of Assertion (A).

Assertion (A) is true and Reason (R) is false.

Assertion (A) is false and Reason (R) is true.

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Concepts Covered - 1

Sex Determination: ZW Female & ZZ Males Type

In butterflies and birds, the female is heterogametic having dissimilar Z and W chromosomes.
The male is homogametic having similar ZZ chromosomes (It is a convention to designate female as ZW instead of XY and male as ZZ instead of XX).