OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In her biology class, Natasha has been asked to complete a strand of DNA with appropriate nucleotides. If half of the strand is A-T-C-C-G-A-T-C, what would she write for the other half?
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T-U-G-C-G-U-A-G
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T-A-G-C-C-T-A-C
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T-U-G-G-C-T-U-G
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T-A-G-G-C-T-A-G
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Explanation:
Detailed explanation-1: -Each strand is composed of nucleotides bonded together covalently between the phosphate group of one and the deoxyribose sugar of the next. From this backbone extend the bases. The bases of one strand bond to the bases of the second strand with hydrogen bonds.
Detailed explanation-2: -Transcription is the first step in gene expression. It involves copying a gene’s DNA sequence to make an RNA molecule. Transcription is performed by enzymes called RNA polymerases, which link nucleotides to form an RNA strand (using a DNA strand as a template).
There is 1 question to complete.