Ask the Chatbot Games & Quizzes History & Society Science & Tech Biographies Animals & Nature Geography & Travel Arts & Culture ProCon Money Videos
Erwin Chargaff
References
Britannica AI Icon

Erwin Chargaff

biochemist
Written by
The Information Architects of Encyclopaedia Britannica

The Information Architects maintain a master list of the topics included in the corpus of  Encyclopædia Britannica, and create and manage the relationships between them.
The Information Architects of Encyclopaedia Britannica
Last updated

Quick Summary

Erwin Chargaff was a biochemist who made a significant discovery regarding the composition of DNA. In 1950, he found that in DNA, the amount of adenine (A) is always equal to the amount of thymine (T), and the amount of guanine (G) is always equal to the amount of cytosine (C). This observation, known as Chargaff's rules, was crucial for James Watson and Francis Crick in developing their model of the DNA double helix in 1953. Chargaff's findings suggested that adenine pairs with thymine and guanine pairs with cytosine, forming the "rungs" of the DNA ladder structure.12

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
2 Britannica Sources
  1. heredity - Structure and composition of DNA
  2. genetics - Time line of important milestones in the history of genetics

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.