Why Is a Guide RNA Needed When Using CRISPR-Cas9 for Gene

question 11

Multiple Choice

Why is a guide RNA needed when using CRISPR-Cas9 for gene editing?

• A) to help Cas9 find the target DNA to cut
• B) to help Cas9 be transported into the nucleus
• C) to help repair the target DNA after it is cut
• D) to help make copies of the target DNA

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Definitions:

Retina

A light-sensitive layer at the back of the eye that converts light images into nerve signals that are sent to the brain.

Pupil

The circular opening in the center of the iris of the eye, which regulates the amount of light that enters.

Lens

A transparent optical component that focuses or disperses light rays, used in a variety of devices such as glasses, cameras, and microscopes to enhance vision or capture images.

Opponent-Process Cell

A type of cell in the visual system that is believed to be responsible for processing colors by encoding differences between pairs of colors such as red-green or blue-yellow.