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:

Net Present Value (NPV)

The difference between the present value of cash inflows and the present value of cash outflows over a period of time, used in capital budgeting to assess the profitability of an investment or project.

Cash Inflows

Money or other forms of financial assets that enter a company, typically from sales, investments, financing, and other business activities.

Depreciation Value

The reduction in value of an asset over time due to wear and tear or obsolescence.

Internal Rate of Return (IRR)

The yield rate at which all of a project's cash flows' net present value becomes null.