Asked by Harry Zhang on Apr 27, 2024
Verified
The fact that for a given species the amount of purines in the DNA always matches the number of pyrimidines was first determined by
A) Watson and Crick.
B) Franklin and Wilkins.
C) Hershey and Chase.
D) Chargaff.
E) Mendel.
Purines
Nitrogenous bases found in DNA and RNA that include adenine (A) and guanine (G), playing a crucial role in encoding genetic information.
Pyrimidines
One of the two types of nitrogenous bases found in nucleic acids, including cytosine, thymine (in DNA), and uracil (in RNA).
Chargaff
Refers to Chargaff's rules, which are empirical rules regarding the ratios of nucleotide bases within DNA molecules: adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).
- Gain an understanding of the organization and molecular makeup of DNA and RNA.
- Acquire knowledge on the critical role played by complementary base pairing in the formation and functionality of DNA.
Verified Answer
PK
Patricia KnightMay 03, 2024
Final Answer :
D
Explanation :
The discovery that the amount of purines (adenine and guanine) always equals the amount of pyrimidines (thymine and cytosine) in DNA was first made by Erwin Chargaff in the late 1940s.
Learning Objectives
- Gain an understanding of the organization and molecular makeup of DNA and RNA.
- Acquire knowledge on the critical role played by complementary base pairing in the formation and functionality of DNA.