Sometimes a mutation happens and no amino acids end up being changed (like how ACC and ACG both code for Threonine). What word do you think scientists use to describe when this happens? It is a ..... mutation.

GENE MUTATION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Sometimes a mutation happens and no amino acids end up being changed (like how ACC and ACG both code for “Threonine). What word do you think scientists use to describe when this happens? It is a ____ mutation.

A	Missense
B	Nonsense
C	Silent
D	Deletion

Explanation:

Detailed explanation-1: -In the genetic code, multiple codons can code for the same amino acid. This means that sometimes a mutation can still allow for the same amino acid to be incorporated into the protein and thus there is no change to the protein function.

Detailed explanation-2: -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-3: -Silent mutation: Some mutations that change DNA bases do not have any effect on the sequence of amino acids in the protein. These mutations are called silent mutations and they do not affect the structure or function of the protein because there is no effect on the amino acid sequence.

Detailed explanation-4: -A mutation in the amino acid sequence may alter the structure of a protein but it does not necessarily alter its function, although, the mutation at specific sites such as conserved residues can bring about a change in the structure and function of the protein.

There is 1 question to complete.

AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

GENE MUTATION