PPT-The Evolution of Populations

In evolutionary terms an organisms fitness is measured by its stability in the face of environmental change contribution to the gene pool of the next generation genetic variability mutation rate . A. Darwin’s . Ideas revisited. - it . was more than 50 years after Darwin started to develop . his theory . of evolution before biologists could determine . how evolution . takes place. - about . H.-W. Rix IMPRS Galaxies Course March 11, 2011. Goal:. Determine . n. *. (M. *. ,. t. age. ,[Fe. /H],. R. ). . for a population of galaxies. How many stars of what mass and metallicity . formed when and where in galaxies?. metallicity. gradients . in disk galaxies from . integrated stellar populations. Patricia Sánchez-. Blázquez. . And the CALIFA collaboration. Evolution of the . metallicity. gradients in cosmological simulations. There is overwhelming evidence for the evolution of life on Earth. . Evolution in summary. Evolution occurs when heritable characteristics of a species change. . Evolution at its most fundamental level simply describes a . A mechanism for change in populations.. Any change in the . inherited . traits within a population across generations. Individuals better adapted to their environment tend to survive and . produce more offspring. Last week we talked about. …. The universe had a beginning. God must be the creator of the universe. 3 views Christians can faithfully hold: Old-Earth Creationism, Young-Earth Creationism, Theistic Evolution. What do we use in order to determine evolutionary relationships?. Fossil Record. Anatomical Evidence. Molecular Evidence. Embryological Evidence. Evidence for Evolution. Fossil Record. Evidence for Evolution. Question? . Is the unit of evolution the . individual. or the . population?. Answer = while evolution effects individuals, it can only be tracked through time by looking at populations. So what do we study? . Vestigial Structures. DNA & The Genetic Code. Fossil Record. Strata & Superposition. Relative Age vs. Absolute Age. Fossil Record. Per the theory - You would expect older rock to contain mostly organisms that are less complex and less like current (living) organisms. Early atmosphere, evidence, natural selection and disease agents influence natural selection. . Introduction . Evolution “ simple” definition: change over time. Evolution helps us to understand the history of life.. Chapter 22 – Descent with Modification. The Era of Evolutionary Biology. On November 24, 1859, . Charles Darwin. . published his hypothesis in . On the Origin of Species by Means of Natural Selection. Change in . allele frequencies . in a population over generations. Microevolution. Speciation. = origin of species. Microevolution. : changes . in allele frequencies within . a single gene pool. Macroevolution. Chapter 11 Biology Textbook. KEY CONCEPT . Hardy-Weinberg equilibrium provides a framework for understanding how populations evolve.. . Hardy-Weinberg equilibrium describes populations that are not evolving. . of . the Red . Queen. CfE. . Advanced Higher Biology. Unit . 2: . Organisms and Evolution. SQA mandatory key information. A change in the traits of one species acts as a selection pressure on the other species. .