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NEETZoologyPrinciples of Inheritance and Variation

Read the following Assertion and Reason and choose the correct option. Assertion: Failure of segregation of chromatids during cell division cycle results in the gain or loss of a chromosome (s), called aneuploidy. Reason: For example, Down's syndrome results in the gain of extra copy of chromosome 21.

Options

  1. ABoth Assertion and Reason are true and Reason is correct explanation of Assertion
  2. BBoth Assertion and Reason are true but the Reason is not the correct explanation of Assertion
  3. CAssertion is true but the Reason is false
  4. DBoth Assertion and Reason are false

Correct answer

A. Both Assertion and Reason are true and Reason is correct explanation of Assertion

Step-by-step solution

Failure of segregation of chromatids during cell division cycle results in the gain or loss of a chromosome (s), called aneuploidy. For example, Down's syndrome results in the gain of extra copy of chromosome 21.

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