HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following statements about point mutations are true?
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Point mutations include substitutions, insertions, and deletions.
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Substitutions only affect one amino acid.
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Insertions and deletions are frameshift mutations.
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All are true.
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All are false.
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Explanation:
Detailed explanation-1: -Answer and Explanation: The correct answer to this question is B. They always cause a change to an organism’s genotype. Regardless of the cause of the change, a DNA sequence is always altered when it mutates.
Detailed explanation-2: -Types of Point Mutations. We are going to focus on the following point mutations: frameshift, silent, nonsense, and missense. Let’s start with a frameshift mutation, where there’s an insertion or deletion of one or more bases.
Detailed explanation-3: -Which characteristic is not true of a point mutation? A point mutation always produces a change in the amino acid sequence in a protein.
There is 1 question to complete.