Question:
Thirty percent of the bases in a sample of DNA extracted from eukaryotic cells is adenine. What percentage of cytosine is present in this DNA?
Thirty percent of the bases in a sample of DNA extracted from eukaryotic cells is adenine. What percentage of cytosine is present in this DNA?
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Always pair A with T and G with C in DNA.
Updated On: Apr 14, 2026
- 10%
- 20%
- 30%
- 40%
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: In DNA: %A = %T, %G = %C
Step 2: Given A = 30%, so T = 30%.
Step 3: Remaining: 100 - 60 = 40% = G + C ⟹ C = 20%
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