Question:

Assertion (A): In reptiles, the temperature at which the fertilized eggs are kept decides the sex of the offspring.
Reason (R): Sex is not genetically determined in some animals.
In the light of the above statements, choose the most appropriate answer from the options given below:

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In certain reptiles, sex determination is dependent on environmental factors like temperature, rather than on genetics.
Updated On: May 19, 2025
  • Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A).
  • Both Assertion (A) and Reason (R) are true, and Reason (R) is not the correct explanation of Assertion (A).
  • Assertion (A) is true, but Reason (R) is false.
  • Assertion (A) is false, but Reason (R) is true.
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The Correct Option is A

Solution and Explanation

Assertion (A) is true, as temperature-dependent sex determination occurs in many reptiles, where the temperature during incubation affects the offspring's sex. 
Reason (R) is also true, as in some animals like reptiles, sex determination is not genetic but environmental. 
Therefore, the correct answer is option (1).

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