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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3’-ATGCAA-5’
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5’-GTTACT-3’
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3’-TATTGG-5’
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5’-ATGCAA-3’
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Detailed explanation-1: -So, the sequence of the complimentary strand in 5’ to 3’ direction is 5’-GCATGCATGCATGCATGCATGCATGCAT− 3’.
Detailed explanation-2: -Adenine makes the double bond with thymine while guanine makes the triple bond with cytosine which means adenine and thymine are complementary base pairs and cytosine and guanine are complementary base pairs. The complementary sequence for the DNA strand 5’ ATCGAACGT 3’ is 3’ TAGCTTGCA 5’.
Detailed explanation-3: -A DNA strand is complementary. This means adenine pairs with thymine and cytosine pairs with guanine in the opposite strand. The given strand has a sequence 5’-GAATTG-3’. Hence the complementary strand will have a sequence 5’-CAATTC-3’.
Detailed explanation-4: -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.