In E Coli, There Is a Mutation in a Gene Called

question 32

Multiple Choice

In E. coli, there is a mutation in a gene called dnaB that alters the helicase that normally acts at the origin. Which of the following would you expect as a result of this mutation?

• A) No proofreading will occur.
• B) No replication fork will be formed.
• C) The DNA will supercoil.
• D) Replication will occur via RNA polymerase alone.
• E) Replication will require a DNA template from another source.

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Definitions:

Myelin

A fatty substance that surrounds and insulates the axons of some neurons, facilitating faster electrical impulse transmission.

Dendrites

Extensions of neurons that receive signals from other neurons or sensory receptors, playing a key role in the communication within the brain.

Axons

Long, slender projections of nerve cells that transmit electrical impulses away from the neuron's cell body.

Somas

The cell bodies of neurons, containing the nucleus and cytoplasm, which are essential for the neuron's function and health.