Asked by Anette Garcia on May 02, 2024
Verified
Chargaff's rules of DNA structure states that
A) A + T = G + C.
B) A = T, C = G
C) A = C, T = G.
D) A = G, T = C.
E) the number of purines in DNA never equals the number of pyrimidines.
Chargaff's Rules
Empirical rules stating that DNA from any cell of any organisms has a 1:1 ratio of pyrimidine and purine bases (cytosine to guanine and adenine to thymine).
Purines
Nitrogenous bases found in DNA and RNA that include adenine and guanine.
Pyrimidines
One of the two types of nitrogenous bases found in nucleic acids, characterized by a single ring structure, and includes cytosine, thymine (DNA only), and uracil (RNA only).
- Know the role of complementary base pairing in DNA structure and function
Verified Answer
PT
Pham Thi Kim Cuong B1707734May 04, 2024
Final Answer :
B
Explanation :
Chargaff's rules state that the amount of adenine (A) equals the amount of thymine (T), and the amount of cytosine (C) equals the amount of guanine (G). This is expressed as A = T and C = G, which is best represented by choice B.
Learning Objectives
- Know the role of complementary base pairing in DNA structure and function