Use the Following Figure to Answer the Next Few Questions

question 23

Multiple Choice

Use the following figure to answer the next few questions.

Figure 21.1 Types of DNA sequences in the human genome.
The pie chart in Figure 21.1 represents the relative frequencies of the following in the human genome:
I.repetitive DNA unrelated to transposons
II.repetitive DNA that includes transposons
III.unique noncoding DNA
IV.introns and regulatory sequences
V. exons
-Which region includes Alu elements and LI sequences?

• A) A
• B) B
• C) C
• D) D
• E) E

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Definitions:

Cohort Study

A research approach involving a group of people observed over a period to determine how certain exposures affect outcomes.

Experimental

Pertaining to a scientific approach involving controlled trials and studies to test hypotheses, investigate cause-and-effect relationships, or demonstrate specific effects.

Observational

Pertaining to research methods that involve watching and recording behaviors or outcomes in their natural setting without manipulation.

Nested Case-Control

A study design used within a cohort study, where a subset of participants with a specific outcome is compared to a subset without the outcome from the same cohort.