EVS 1101 Lecture Notes - Lecture 1: Allopatric Speciation, Divergent Evolution, Convergent Evolution

• School: University of Ottawa
• Department: Environmental Science
• Course: EVS 1101
• Professor: Hafida El Bilali

Document Summary

Biological evoluion- geneic change in populaion of organisms across generaions. Geneic change- modiicaions in the appearance, funcioning, or behavior of organisms through ime. Natural selecion- the process by which traits, that enhance survival and reproducion, are passed on more frequently to future generaions than those that do not, altering the geneic make up of populaion through ime. Evoluion- organisms adapt their environment and change over ime. Altering the geneic make up of a populaion. It is important for understanding anibioic, pesicide resistance, agriculture issues, producion and medicines etc. Stores or encodes all the informaion that will be used by rna to direct the building and maintenance of the proteins that comprise an organism"s cells and to pass along characterisics from parents to ofspring. Recombinaion- produces novel combinaions of genes, generaing variaion among individuals. Direcional selecion= drives a feature in one direcion. Stabilizing selecion= produces intermediate traits, preserving the status quo. Disrupive selecion= traits diverge in two or more direcions.