'Distance methods' diaporamas de présentation

Molecular Phylogenetics

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The Cosmological Distance Ladder - to redshift 1000

The Cosmological Distance Ladder - to redshift 1000. Michael Rowan-Robinson Imperial College. First steps on the distance ladder. Aristotle (384-322 BC) - estimated the size of the earth (+ Eratosthenes, Poseidonius, 10%). Hipparcos (2 nd C BC) - estimated distance of the moon

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USF Annual Refresher Radiation Safety Training

USF Annual Refresher Radiation Safety Training USF RADIATION SAFETY PERSONNEL CLASSIFICATIONS AND TRAINING REQUIREMENTS Principal Investigator (PI) : This person is primarily responsible for the permit operation and the authorized use, supervision and training of their laboratory personnel.

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Molecular evolution, cont. Estimating rate matrices

Molecular evolution, cont. Estimating rate matrices. Lecture 15, Statistics 246 March 11, 2004. REVIEW: The Jukes-Cantor model (1969). Q = P(t) =. C. o. m. m. o. n. a. n. c. e. s. t. o. r. o. f. h. u. m. a. n. a. n. d. o. r. a. n. g. t. t. i. m.

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Purpose of phylogenetics :

Purpose of phylogenetics : Try to find the genealogical ties between organisms, reconstructing the evolutionary relationship between species. Backtrack characterizations of ancestors Estimate the time of divergence between two organisms since they last shared a common ancestor.

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Goals of Phylogenetic Analysis

Goals of Phylogenetic Analysis. Given a multiple sequence alignment, determine the ancestral relationships among the species. We assume that residues in a column are homologous , and that all columns have the same history. Time. Hu Ch Go Gi. Types of Phylogenetic Methods.

111 views • 11 slides