Bio Lecture 6 - Evolutionary Modification in Action 1...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Evolutionary Modification in Action 1. Definitions 2. Mechanisms of evolution 3. Analysis of Antibiotic Resistance Chapter 22; Online lecture module 3 Evolution…not just ancient history Pesticide Resistance 0 250 500 1950 1970 1990 1930 Insects, mites Fungi/bacteria Weeds Pesticide Resistant Species Gould, F. 1995. The evolutionary potential of crop pests. In, Exploring Evolutionary Biology (ed. M. Slatkin). Sinauer. Evolution and trophy hunting • Ram Mtn, Alberta • 30 years of trophy hunting • body size of rams getting smaller • length of horns even smaller Coltman et al 2007 year 1970 2000
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Population = collection of interacting and interbreeding individuals of the same species. Change in Genotype Frequencies = combination of alleles at a gene (or set of genes) e.g. X 1 X 1 homozygote X 2 X 1 heterozygote Change in Allele Frequencies = specific form of a particular gene or DNA segment e.g. X 1 , X 2 , X 3 alleles at gene X Evolutionary modification: change in genetic composition of a population over time. 3/30=.1 X 1 = 12/60=.2 Do we see genetic changes over time? e.g. oil content in corn Genetic variation in space e.g. Geographic variation in Colour Patterns of Rat Snake
Background image of page 2
Mechanisms of Evolution (complete the table) 1. Migration 2. Random genetic drift 3. Natural selection 4. Mutation 5. Non-random mating Mechanism Effect on Genetic Diversity Within a pop Differences
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/08/2011 for the course BIOL 1030 taught by Professor Ferguson during the Fall '09 term at University of Guelph.

Page1 / 7

Bio Lecture 6 - Evolutionary Modification in Action 1...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online