Question

Which of the following would be an example of a mutation that is positive for an organism?

A) Loss-of-function mutation in a gene essential for growth and development.

B) Silent mutation that does not alter the amino acid sequence of a protein.

C) Gain-of-function mutation in a gene responsible for increased resistance to a harmful environmental factor.

D) Frameshift mutation resulting in a premature stop codon.

Answer 1

A positive mutation for an organism would be a gain-of-function mutation that increases its resistance to a harmful environmental factor, which is a beneficial mutation aiding in adaptation and potential survival.

Step-by-step explanation:

An example of a positive mutation for an organism would be option C: Gain-of-function mutation in a gene responsible for increased resistance to a harmful environmental factor. This kind of mutation can be considered a beneficial mutation because it results in new versions of proteins that help an organism adapt to its environment, potentially increasing its chances of survival and reproduction. Therefore, such mutations are likely to become more common over time.