A Mutation Has Occurred During DNA Replication While the Cell

question 69

Multiple Choice

A mutation has occurred during DNA replication while the cell was preparing to divide. As a result of this, the codon ACU of mRNA has now become ACC. Interestingly, there is no change to the protein being made. Why not?

• A) This is a silent mutation.
• B) The original amino acid isoleucine was changed to leucine, but they are the same variation of amino acid so no change to the protein.
• C) The mutation was ?xed, and even though the codon is now ACC the correct amino acid is put into place for the normal protein.
• D) This is not a mutation that causes a big change, so there is no change to the protein being made.

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Definitions:

Possible Selves

The various components of the self-concept that represent what individuals could become, what they would like to become, and what they are afraid of becoming.

Current Selves

An individual's present sense of identity, incorporating how they see themselves in the moment and their ongoing life narrative.

Self-Serving Bias

A cognitive bias that involves people attributing their successes to internal factors while blaming failures on external factors.

High Self-Esteem

A positive evaluation of oneself and feeling confident in one's own abilities or worth.