MCQ
For two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R)$. Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below :
Assertion : ln human males all the chromosomes are perfectly paired except $X$ and $Y$ chromosomes.
Reason : $X$ and $Y$ are sex chromosomes.
Assertion : ln human males all the chromosomes are perfectly paired except $X$ and $Y$ chromosomes.
Reason : $X$ and $Y$ are sex chromosomes.
- ✓Both $A$ and $R$ are true, and $R$ is correct explanation of the assertion.
- BBoth $A$ and $R$ are true, but $R$ is not the correct explanation of the assertion.
- C$A$ is true, but $R$ is false.
- D$A$ is false, but $R$ is true.