AP BIOLOGY

HEREDITY

GENE INTERACTIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A mutation that does NOT show up through protein function is called
A
deletion mutation
B
inversion mutation
C
silent mutation
D
transverse mutation
Explanation: 

Detailed explanation-1: -Silent mutations occur when the change of a single DNA nucleotide within a protein-coding portion of a gene does not affect the sequence of amino acids that make up the gene’s protein.

Detailed explanation-2: -Point Mutations A nucleotide change in the DNA that does not result in an amino acid change in the protein is called a “synonomous” or “silent” mutation (see Figure 3.3).

Detailed explanation-3: -Point mutations that alter the resulting protein sequences are called nonsynonymous mutations, while those that do not alter protein sequences are called silent or synonymous mutations.

Detailed explanation-4: -A genetic mutation that does not cause a change in the amino acid sequence of the resulting protein can still alter the protein’s expected function, according to a new study conducted at the National Cancer Institute (NCI), part of the National Institutes of Health (NIH).

Detailed explanation-5: -Silent mutations are mutations in DNA that do not have an observable effect on the organism’s phenotype. They are a specific type of neutral mutation. The phrase silent mutation is often used interchangeably with the phrase synonymous mutation; however, synonymous mutations are not always silent, nor vice versa.

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