Molecular Basis Of Inheritance Question 127
Question: If a double stranded DNA has 20% of cytosine, what will be the percentage of adenine in it?
Options:
A) 20%
B) 40%
C) 30%
D) 60%
Show Answer
Answer:
Correct Answer: C
Solution:
[c] The purines and pyrimidines are always in equal amounts as per chargaff?s rule.
So, if cytosine is 20%, the thymine will be 30% and thymine is equal to adenine.
Then the percentage of adenine will be 30%.