NEET Biology question

Antiparallel strands of a DNA molecule means that

(A)One strand turns anti-clockwise
(B)The phosphate groups of two DNA strands at their ends, share the same position
(C)The phosphate groups at the start of two DNA strands are in opposite position(pole)Correct
(D)One strand turns clockwise

Answer: (C)

Solution

Antiparallel strands means the two strands run in opposite polarity (one 5'→3', the other 3'→5'); at a given end of the duplex, one strand presents a free 5'-phosphate

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Question ID VK-111587