BIOLOGY
NUCLEIC ACIDS
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Question
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If one strand of a DNA molecule has the sequence of bases 5ʹATTGCA3ʹ, the other complementary strand would have the sequence:
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5ʹTAACGT3ʹ
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3ʹTAACGT5ʹ
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5ʹUAACGU3ʹ
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3ʹUAACGU5ʹ
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Explanation:
Detailed explanation-1: -The complementary sequence of DNA is TAATAACGCG.
Detailed explanation-2: -Updated On: 27-06-2022 (c) Adenine always pairs with thymine and cytosine always pairs with guanine. Thus, sequence of bases on complementary strand would be TACGTACGT.
Detailed explanation-3: -So, the sequence of the complimentary strand in 5’ to 3’ direction is 5’-GCATGCATGCATGCATGCATGCATGCAT− 3’.
Detailed explanation-4: -Figure 9.8 The two strands of DNA are complementary, meaning the sequence of bases in one strand can be used to create the correct sequence of bases in the other strand. Because of the complementarity of the two strands, having one strand means that it is possible to recreate the other strand.
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