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Assertion: The sugar phosphate backbone of two chains in DNA double helix shows ani parallel polarity. <br> Reason: The PDE bonds in one strand goes from a 3’carbon of one nucleotide to a 5’carbon of adjacent nucleotide, whereas those in complementary strand go vice versa.

$\begin{array}{1 1}\text{a. Both Assertion and reason are true and Reason is the correct explanation of Assertion.} \\ \text {b. Both Assertion and reason are true, but Reason is not the correct explanation of Assertion.} \\ \text{c. Assertion is true, Reason is false.} \\ \text{d. Both Assertion and reason are false.} \end{array}$

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