GENETICS AND EVOLUTION
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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ACG GAT CTA TAG
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TCG GTA CAT ATG
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TGC CTA GAT ATC
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UCG CUA CAU AUG
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Detailed explanation-1: -Answer and Explanation: If a DNA strand has the sequence 5’-ATG-3’, the complementary messenger RNA (mRNA) sequence made using this DNA template would have the sequence 3’-UAC-5’.
Detailed explanation-2: -Answer and Explanation: The complementary DNA strand of the sequence ATGC will be TACG. The complementary base pairing in DNA is as per the Chargaff’s rules. According to these rules, purines always hydrogen bond with pyrimidines and vice-versa.
Detailed explanation-3: -In the complementary strand of DNA, the bases that bind to TAC are complimentary, thus they are ATG.
Detailed explanation-4: -The correct answer is (d): 5’ TACCGA 3’. Based on complementary base pairing rules, T pairs with A, whereas C pairs with G. Hence, the complementary sequence for 3’ ATGGCT 5’ starting from the 5’ end is 5’ TACCGA 3’.