DNA Replication Is Highly Accurate

question 17

Multiple Choice

DNA replication is highly accurate. It results in about one mistake per billion nucleotides. For the human genome, how often would errors occur?

• A) on average, once every 6 cell divisions
• B) on average, once or twice in the lifetime of an individual
• C) on average, 6 times each time the entire genome of a cell is replicated
• D) on average, once a lifetime in 10% of the population

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Definitions:

Stress Hormones

Chemicals released in the body in response to stress, such as cortisol and epinephrine, that prepare the body for a fight or flight response.

Long-Term Potentiation

A long-lasting enhancement in signal transmission between two neurons that results from stimulating them synchronously, often considered one of the major cellular mechanisms that underlies learning and memory.

Cortexes

The plural of cortex, relating to the outer layer of an organ or structure, such as the brain, characterized by its role in high-level functions including thought, memory, and consciousness.

Rats

Small rodents often used in scientific research due to their physiological and genetic similarities to humans, contributing to many scientific discoveries.