HEREDITY
MUTATIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a base substiution that causes no change in amino acid
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a base substitution that causes a change in one amino acid
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a base change that codes for a stop
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a base insertion or deletion
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Detailed explanation-1: -A genetic alteration in which a single base pair substitution alters the genetic code in a way that produces an amino acid that is different from the usual amino acid at that position. Some missense variants (or mutations) will alter the function of the protein. Also called missense variant.
Detailed explanation-2: -Missense mutations occur when a single nucleotide base in a DNA sequence is swapped for another one, resulting in a different codon and, therefore, a different amino acid.
Detailed explanation-3: -Missense mutation: This type of mutation is a change in one DNA base pair that results in the substitution of one amino acid for another in the protein made by a gene.
Detailed explanation-4: -Base Substitutions Single base substitutions are called point mutations, recall the point mutation Glu—–> Val which causes sickle-cell disease.
Detailed explanation-5: -A Missense Mutation is a base substitution that changes a single amino acid in a polypeptide.