A sample of double-stranded DNA is analyzed and found to contain 20% Cytosine. What is the expected percentage of Adenine in this sample?
Q1. A sample of double-stranded DNA is analyzed and found to contain 20% Cytosine. What is the expected percentage of Adenine in this sample?
Answer: 30%
Explanation: Chargaff's rule (A=T, G=C) implies if C=20%, then G=20%. The remaining 60% is shared equally between A and T (30% each).