NEET 2007 Biology question

The two polynucleotide chains in DNA are:

(1)semiconservative
(2)parallel
(3)discontinuous
(4)antiparallelCorrect

Answer: (4)

Solution

In Watson and Crick's double helix the two polynucleotide strands are held by hydrogen bonds between complementary bases (A=T, GC) and run in opposite directions: one strand has polarity while the other runs .

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Question ID VK-089824