BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which strand of DNA would pair with 5’-GATCT-3’
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5’-CTAGA-3’
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5’-CUAGA-3’
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5’-AGATC-3’
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5’-TCTAG-3’
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Explanation:
Detailed explanation-1: -The given strand has a sequence 5’-GAATTG-3’. Hence the complementary strand will have a sequence 5’-CAATTC-3’.
Detailed explanation-2: -If one strand of a DNA molecule has the sequence of bases 5’ATTGCA3’, the other complementary, antiparallel strand of DNA would have the sequence: 5’TGCAAT3’.
Detailed explanation-3: -So, the sequence of the complimentary strand in 5’ to 3’ direction is 5’-GCATGCATGCATGCATGCATGCATGCAT− 3’.
Detailed explanation-4: -It synthesizes the RNA strand in the 5’ to 3’ direction, while reading the template DNA strand in the 3’ to 5’ direction. The template DNA strand and RNA strand are antiparallel. RNA polymerase always builds a new RNA strand in the 5’ to 3’ direction.
There is 1 question to complete.