Question

which situation would be most likely to cause a dna mutation?
a. a culture of cells is placed in a chamber and exposed to high pressure for 10 hours.
b. a maple tree becomes dormant to prevent water loss during a drought.
c. a wood frog in a lake is exposed to temperatures below 0°c during the winter months.
d. a person spends one hour each day under the ultraviolet rays of a tanning bed.

Explanation:

Ultraviolet (UV) rays are a type of mutagen. Mutagens are agents that can cause changes (mutations) in DNA. High - pressure exposure (option A) is not a common mutagen. A maple tree becoming dormant (option B) is a normal physiological adaptation and not related to DNA mutation. A wood frog being exposed to cold temperatures (option C) is a normal environmental response for the frog and not a mutagenic situation.

Answer:

D. A person spends one hour each day under the ultraviolet rays of a tanning bed.