Bio 101 Day 23

Bio 101 Day 23 - D NA: The Carrier of Genetic Information...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
DNA: The Carrier of Genetic Information Chapter 12 Transmission Genetics—based on the extension and modification of Mendelian Principles Molecular Genetics—studying the genetic material directly Questions for scientists in 1930s and 1940s? What are genes made of? How do genes work? Requirements for the hereditary material --Precisely duplicated and transmitted to next generation --Serves as a system of information storage and retrieval 1944 --Avery, MacLeod, and McCarty at Rockefeller University --Demonstrated that the “transforming factor” in bacteria is DNA Griffith’s Transformation Experiment 1928 Griffith’s Bacterial Strains --S strain—virulent—form smooth colonies because cells have a polysaccharide capsule— can’t be phagocytized --R strain—avirulent—form rough colonies because cells lack polysaccharide capsule—can be phagocytized
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Transformation --Living S cells were obtained from the dead mice that had been injected with dead S cells and living R cells --Conclusion—some substance from the dead S cells had been transferred to the living R
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/06/2010 for the course BIO 01-119-10 taught by Professor D'arville during the Fall '09 term at Rutgers.

Page1 / 4

Bio 101 Day 23 - D NA: The Carrier of Genetic Information...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online