Chargaff observed that the amount of _______ was roughly equal to the amount of _______ in all tested organisms.
A) purines; pyrimidines
B) A; T
C) A + T; G + C
D) A + G; T + C
E) a, b, and d

Question

Quizplus · Accepted Answer

Chargaff's rules state that in DNA, the amount of adenine (A) is roughly equal to thymine (T), and the amount of guanine (G) is roughly equal to cytosine (C). This means purines (A + G) are equal to pyrimidines (T + C), and specifically A is equal to T.

Chargaff Observed That the Amount of _______ Was Roughly Equal