Ecosystem And Natural Selection - Biology
Presentation1population neutral theory
Programa
Chapter 9. 1. Natural selection can change allele frequencies in the next generation, but it does not drive genotype frequencies away from predicted values.
Plant of the day! Pebble plants, Lithops, dwarf xerophytes Aizoaceae South African Plants consist of one or more pairs of bulbous leaves – almost no stem.
One-locus diploid model Goals: Predict the outcome of selection: when will it result in fixation, when in polymorphism Understand the effect of dominance.
Salit Kark The Biodiversity Research Group Department of Evolution, Systematics and Ecology The Silberman Institute of Life Sciences The Hebrew University.
In the deterministic model, the time till fixation depends on the selective advantage, but fixation is guaranteed.
Maintaining VariationMaintaining Variation Sexual selection Balanced polymorphism.
Topic 14. Lecture 20. Positive, negative, and balancing selection in natural populations. We considered the five factors of Microevolution - mutation,
AP Biology – Ch. 23 – The Evolution of Populations The smallest unit of evolution? Microevolution 3 main mechanisms responsible for change in allele.
Mutationism, Neutralism, Selectionism
