Use the Following to Answer Questions
a Researcher Is $\bullet$

question 7

Multiple Choice

Use the following to answer questions
A researcher is interested in studying Drosophila genes that are turned on in response to UV light exposure. She uses a microarray to carry out her experiment and is particularly interested in eight genes shown in the microarray below.
$\bullet$ Vertical stripes mean hybridization to UV light-exposed cell cDNA only.
$\bullet$ Horizontal stripes mean hybridization to nonexposed cell cDNA only (control) .
$\bullet$ Completely filled in means hybridization to both cDNA types.
$\bullet$ Blank means hybridization to neither cell's cDNA.
-Which genes appear to be upregulated in the UV light-exposed group?

• A) 1, 3, and 5
• B) 2 and 7
• C) 4, 6, and 8
• D) 6 only
• E) 4 and 8 only

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Definitions:

HIV-1

The most common and infectious subtype of the Human Immunodeficiency Virus, causing acquired immunodeficiency syndrome (AIDS) by attacking the immune system.

Acquired Immune Deficiency Syndrome

A life-threatening condition caused by the human immunodeficiency virus (HIV) that severely damages the immune system.

Human Immunodeficiency Virus

A virus that attacks the immune system, the body's natural defense against illness, and can lead to AIDS if not treated.

Immune System

The body's defense mechanism against infections and diseases, comprising organs, tissues, cells, and proteins that work together to protect the body.