OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If a short sequence of DNA is AATTGCCGT, its complement is
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AAAACDCCA
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TTAACGGCT
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TTAACGGCA
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TTAAGCCGA
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Explanation:
Detailed explanation-1: -i) The base sequence for its complementary strand is ‘ATCGTACTA’. ii) These base pairs are held together by hydrogen bonds. Between A and T 2 hydrogen bonds are present and between G and C 3 hydrogen bonds are present.
Detailed explanation-2: -The base pairs on one strand of the DNA bind with the base pairs of the other strand specifically. A always pairs with T with two hydrogen bonds and G always pairs with C with three hydrogen bonds. So if one strand is ATGCTTGA then the complementary strand will be TACGAACT.
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