Video 20: Matthew Meselson, clip 2
Matt Meselson is a Professor in the Department of Molecular and Cellular Biology at Harvard University. His laboratory studies sexual reproduction and genetic recombination, and how and why they are maintained in evolution.
matthew meselson, molecular and cellular biology, genetic recombination, laboratory studies, models of dna, harvard university, sexual reproduction, dna replication, evolution
- ID: 16461
- Source: DNALC.DNAFTB
- Download: MPEG 4 Video
How Meselson came to read the Watson and Crick paper, then think about ways to experimentally test how DNA replicates.
Explaining density gradient centrifugation.
Matthew Meselson and Franklin Stahl invented the technique of density gradient centrifugation and used this to prove that DNA is replicated semi-conservatively.
Franklin Stahl and Matthew Meselson invented the technique of density gradient centrifugation and used this to prove that DNA is replicated semi-conservatively.
Matt Meselson talks about the different models that were considered before their experiment.
Sydney Brenner showed that mRNA was the unstable intermediate that carried the message from DNA to the ribosomes.
Describing how he first met Matthew Meselson.
Describing his first meeting with James Watson and Matthew Meselson.
Three different models of DNA replication were proposed. Matt Meselson and Frank Stahl's experiment supported only one of the models.
James Watson and Francis Crick solved the structure of DNA. Other scientists, like Rosalind Franklin and Maurice Wilkins, also contributed to this discovery.