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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GGCTTA
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TTGGGA
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CCAGGT
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TTCGGT
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Detailed explanation-1: -The complementary strand of DNA is the base pair that is created complementarity to the given DNA sequence. The base pairs are adenine and thymine which forms a double bond and guanine and cytosine which forms a triple bond. The complementary strand for the given sequence is TTCGGT.
Detailed explanation-2: -Answer and Explanation: If the template strand of DNA contains the nucleotide base sequence ATGCCA, the nucleotide sequence of the transcribed mRNA strand would be: (c) UACGGU. This answer is correct because each base in the mRNA strand is complementary to the corresponding base in the DNA strand.
Detailed explanation-3: -In DNA, the complementary bases are adenine and guanine; thymine and cytosine. Each nucleotide in DNA is composed of a nitrogen containing base, either guanine (G), adenine (A), thymine (T), or cytosine (C) as well as a monosaccharide sugar called deoxyribose and a phosphate group.
Detailed explanation-4: -Answer and Explanation: For the sequence 5’-GATTACA-3’, the complementary DNA strand would be 3’-CTAATGT-5’. Often, DNA strands are written in the 5’ to 3’ direction, so the complementary strand would be 5’-TGTAATC-3’ when written 5’ to 3’.