PPT-Genetic Drift

Random change in allele frequencies from 1 generation to the next Individuals who survive amp pass on their genes are not necessarily the fittest Leads to a loss of genetic variation. adaptationist. . explanations. …. 5) A feature may be a by-product of selection for another trait. Spandrel = a phenotypic characteristic that is a byproduct of the evolution of some other character, rather than a direct product of adaptive selection. . Genetic Drift (and Inbreeding). DEVIATION. . from . Hardy-Weinberg Equilibrium. Indicates that . EVOLUTION. Is happening. 4 Major Evolutionary Mechanisms that alter allele frequencies in populations:. Ned Dochtermann. Erin Gillam. Tim Greives. Steve Travers. (North Dakota State Univ.). Kris Holder. Jen Weghorst . (Univ. of Kansas). Facilitators:. Catherine Kirkpatrick . (Univ. of Minnesota). Steven Ralph . Genetic Drift. Genetic drift is random fluctuation in allele frequency between generations. . The effects of genetic drift are pronounced in small populations. .. A Genetic Bottleneck is a Form of Genetic Drift. . Chapter. 12-1. Pan-. gaea. . “. all. - earth. ” . Note: Our world today is actually a 2’nd or 3’rd generation “super continent” or “. pangea. ” !!!. . Alfred Wegener . process. Written in the genetic code of species alive today. Story of life on earth is the story of the molecule of life---DNA---and the various ways in which it manifests itself, in the form of living species in order to survive. weinberg. practice . Changes in allele frequencies. Turn in: Comparing AA WS and video notes. Homework. Chp. 20 reading and notes (Due Tuesday). Natural selection video and notes. Hardy-. weinberg. Evolution & Biodiversity. BIL 160. Fall 2019. N vs N. e. Census Population Size (N) . = # of adult (all) individuals (breeding or non-breeding) within a population. This # can be counted by observation.. Crash Course: Population Genetics. https://www.youtube.com/watch?v=WhFKPaRnTdQ. 16-1 Genetic equilibrium. Population genetics. : study of evolution from a genetic point of view. Basically how populations of a species evolve. The change in allele frequencies in populations due to . chance. (not selection). . Can include the loss of alleles from the gene pool.. Genetic drift. The change in allele frequencies in populations due to . Erin Gillam. Tim Greives. Steve Travers. (North Dakota State Univ.). Kris Holder. Jen Weghorst . (Univ. of Kansas). Facilitators:. Catherine Kirkpatrick . (Univ. of Minnesota). Steven Ralph . (Univ. of North Dakota). Patterns of inheritance. Starter. Natural selection recap. Can you remember natural selection from GCSE and AS?. Outline the process of natural selection. Natural selection. Within any species there is variation, due to different alleles. Wellcome. Trust Advanced Courses; Genomic Epidemiology in Africa. , . 21. st. – 26. th. June 2015. Africa . Centre for Health and Population Studies, University of KwaZulu-Natal, Durban, South Africa. Odd populations Deer at Seneca Army DepotCheetah Zosteropslateralis (example of sampling error)Clegg et al Founder EffectWhat happens when a small number of individuals start a new populations?Can res