Khan Academy
Khan Academy: Dna as the "Transforming Principle"
Learn how Griffith and later Avery, McCarty, and MacLeod found strong evidence that DNA is the "transforming principle" that encodes genetic information. [10:18]
Khan Academy
Khan Academy: Hershey and Chase: Dna Is the Genetic Material
Find out how Alfred Hershey and Martha Chase showed conclusively that DNA is the genetic material. [8:49]
Khan Academy
Khan Academy: The Discovery of the Double Helix Structure of Dna
Find out how the double helix structure of DNA was discovered. See the work of Watson, Crick, Franklin, Wilkins, and Chargaff. [8:56]
PBS
Pbs Learning Media: American Masters Collection: James Watson
This is a three video collection about the discovery of DNA structure and function, how it was discovered, and how it works.
Khan Academy
Khan Academy: Hershey and Chase: Dna Is the Genetic Material
This video shows how Alfred Hershey and Martha Chase showed conclusively that DNA is the genetic material.[8:49]
Khan Academy
Khan Academy: The Discovery of the Double Helix Structure of Dna
This video explains how the double helix structure of DNA was discovered. [8:56]
Khan Academy
Khan Academy: Dna as the 'Transforming Principle'
Sal Khan explains how Griffith and later Avery, McCarty, and MacLeod found strong evidence that DNA is the 'transforming principle' that encodes genetic information. [10:18]