DNA Isolated from Human Cheek Cells Was Found to Contain

question 38

Multiple Choice

DNA isolated from human cheek cells was found to contain 21% guanine.What else is true about the base composition of this DNA sample?

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

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