DNA Isolated from Human Cheek Cells Was Found to Contain

question 64

Multiple Choice

DNA isolated from human cheek cells was found to contain 21% guanine. Which statement concerning the base composition of this DNA sample is true?

• A)It contains 79% cytosine.
• B)It contains 21% adenine,21% cytosine,and 21% thymine.
• C)It contains 21% cytosine,29% adenine,and 29% thymine.
• D)It is impossible to say anything specific about the percentages of adenine,cytosine,and thymine without further analysis of composition.

---

Definitions:

Electronic Control

The use of electronic devices or systems to regulate the operation of machines or processes, enhancing efficiency, accuracy, and safety.

Calibration

The process of adjusting and verifying the accuracy of a measuring instrument by comparison with a standard.

Significance Test

A statistical procedure used to test if the observed results significantly differ from what was expected under the null hypothesis.

T Test Statistic

A value used in hypothesis testing, calculated from sample data, to assess the compatibility of the sample with a null hypothesis concerning the mean.