HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a point mutation.
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a frame-shift mutation.
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an addition mutation.
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a deletion mutation.
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Detailed explanation-1: -A missense mutation can be a point mutation. A point mutation is where you change one base in the DNA to another. A missense mutation occurs when that point mutation causes a different amino acid to be placed from that codon.
Detailed explanation-2: -Point mutation is a change in a single base pair of DNA by substitution, deletion, or insertion of a single nitrogenous base. An example of point mutation is sickle cell anaemia. It involves mutation in a single base pair in the beta-globin chain of haemoglobin pigment of the blood.
Detailed explanation-3: -A genetic alteration caused by the substitution of a single nucleotide for another nucleotide. Also called point variant.
Detailed explanation-4: -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.