BIOA01H3 Lecture Notes - Lecture 24: Dna Replication, Okazaki Fragments

• School: UTSC
• Department: Biological Sciences
• Course: BIOA01H3
• Professor: Maydianne Andrade

Document Summary

Bioa01h3 life on earth: unifying principles lecture 24: gene action and inheritance. How do we know dna is the hereditary material: phage were allowed to infect bacteria grown on radioactive sulphur containing bacterial medium, phage were allowed to infect bacteria grown on radioactive phosphorus containing bacterial medium. If the hereditary material is protein then the hereditary material the phage transmit to new bacteria will contain radioactive sulphur, alternatively . If the hereditary material is dna then the hereditary material the phage transmit to new bacteria will contain radioactive phosphorus: methods: new (unlabelled) bacteria were infected with the two types of labelled phage. The bacteria containing the phage genetic material were blended to separate the phage coats from the material inside the bacteria. Hershey and chase analyzed the empty coats and the bacteria for radioactively: results: bacteria infected with the phage that had radioactive sulphur containing proteins did not contain radioactivity.