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3.0: Introduction - Biology

In which we consider the rather exuberant diversity of organisms and introduce the principle that evolutionary mechanisms are responsible for it.In medieval Europe there was a tradition of books known as bestiaries; these were illustrated catalogs of real and imagined organisms in which it was common for particular organisms to be associated with moral lessons.
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11: Fitting Birth-Death Models - Biology

In this chapter, I describe how to estimate parameters from birth-death models using data on species diversity and ages, and how to use patterns of tree balance to test hypotheses about changing birth and death rates. I also describe how to calculate the likelihood for birth-death models on trees, which leads directly to both ML and Bayesian methods for estimating birth and death rates.
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