Answer:
Answer is B
Explanation:
OK. you seem to be lazy to observe. you have to observe each nitrogenous base pair to check whether if it's paired with the right one. according to the rules of biology, two purines and two pyrimidines pair with each other. following are the mistakes of each diagram except B.
A- In the 6th pair, Guanine has paired with Guanine.
C- In the 3rd pair, Adenine has paired with Adenine.
D- In the 10th pair, Guanine has paired with Thymine.
All the above incidents are impossible in the biology of earth.
