Which of the Following Can Lead to Transition Mutations

question 27

Multiple Choice

Which of the following can lead to transition mutations?

• A) incorporation of a base analog that exhibits different base-pairing properties from the base it replaces
• B) chemical modification of an existing base in the DNA so that in the next round of replication it will pair differently from the unmodified base
• C) incorporation of a base analog that exhibits different base-pairing properties from the base it replaces and chemical modification of an existing base in the DNA so that in the next round of replication it will pair differently from the unmodified base
• D) a small insertion or deletion

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Definitions:

Melatonin

A hormone produced by the pineal gland that regulates sleep and wakefulness.

Pineal Gland

A small endocrine gland in the brain that produces melatonin, a hormone that regulates sleep-wake cycles.

Biological Clock

An internal mechanism that controls the timing of biological functions and behaviors, such as sleep, metabolism, and reproduction.

REM Sleep

A phase of sleep characterized by rapid eye movements, more dreaming, and bodily movement; considered important for emotional and cognitive restoration.