Erwin Chargaff's Research Determined the Percentage of the Nitrogen Bases

question 79

Multiple Choice

Erwin Chargaff's research determined the percentage of the nitrogen bases within a strand of DNA. His work determined that

• A) the percent of adenine is equal to the percent of thymine and the percent of cytosine is equal to the percent of guanine.
• B) the percent of adenine is equal to the percent of guanine and the percent of cytosine is equal to the percent of thymine.
• C) the concentration of adenine is twice the concentration of thymine and the concentration of cytosine is twice the concentration of guanine.
• D) the concentrations of adenine, thymine, guanine, and cytosine are all equal.

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