The coalescent

Published on June 30, 2022   42 min

Other Talks in the Series: Introduction to Evolutionary Biology

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Hi. I'm Peter Beerli. I'm faculty in the Department of Scientific Computing at the Florida State University, and I will talk to you about the coalescent.
You might wonder, "The coalescent, what?" If you look at the dictionary, then we think about maybe streams that coalesce in the bigger streams or puddles that coalesce in a bigger puddle and I don't think that gives a lot of information about what I want to talk to you.
To talk a little bit about coalescence theory, I have to do a tour about how we think about biological processes, how we think about modelling these biological processes and we use essentially a whole field in biology, population genetics to talk about that, and then, I will try to highlight coalescence theory, which is part of population genetics and in about 1982 (the early '90s), it revolutionized population genetics and is now used for a lot of explanations about biology. To do that, I will talk about three things. I would talk about data and models. I will talk about population genetics, but in particular, I will introduce how we will model populations using particular achievement of Sewall Wright and Sir Ronald Fisher. Then I will talk about the coalescent in detail, and will give at the end an example of how we could use coalescence theory to actually make everyday inferences.