THE MOLECULAR BASIS OF INHERITANCE
DNA REPLICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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5’ A A G C T C 3’
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3’ A A G C T C 3’
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3’ A A G C T C 5’
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Detailed explanation-1: -Answer and Explanation: The correct answer is (D) 3’-TAAGGC-5’. The two strands of DNA are complementary, meaning that A nucleotides always pair with T, and C always pairs with G. The strands are also antiparallel, meaning that the 3’ end of one strand lines up with the 5’ end of the other strand, and vice versa.
Detailed explanation-2: -Each end of DNA molecule has a number. One end is referred to as 5’ (five prime) and the other end is referred to as 3’ (three prime). The 5’ and 3’ designations refer to the number of carbon atom in a deoxyribose sugar molecule to which a phosphate group bonds.
Detailed explanation-3: -The correct answer is c. In addition, cytosine (C) will complement guanine (G), and adenine (A) will complement thymine (T). Therefore, the complementary strand to 5’ TAGAC 3’ will be: 3’ ATCTG 5’ which is the same as option c.