OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following mutations would be MOST likely to have a harmful effect on an organism?
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a deletion of three nucleotides near the middle of a gene.
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a single nucleotide deletion in the middle of an intron.
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a single nucleotide deletion near the end of a coding sequence.
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a single nucleotide insertion downstream of, and close to, the start of the coding sequence.
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Explanation:
Detailed explanation-1: -So, the correct option is ‘A single base insertion near the start of the coding sequence’.
Detailed explanation-2: -Answer and Explanation: (e) Insertion of one nucleotide is most likely to drastically affect a protein’s sequence. Insertion/deletion of any number of nucleotide/s (except in the multiple of three) will result in the mutation refer to as a frame-shift mutation.
There is 1 question to complete.