Which of the following is complementary to the DNA sequence 5' ATTGCACCGG 3' ?
A
5' CCGGTGCAAT 3'
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B
5' TAACGTGGCC 3'
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C
3' CCGGTGCAAT 5'
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D
3' GGCCACGTTA 5'
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Solution
The correct option is A 5' CCGGTGCAAT 3' The polynucloetide strands in a DNA molecule are antiparallel and complementary to each other. So for the given DNA sequence, 5' CCGGTGCAAT 3' is the correct complementary sequence.