BIOB51H3 Study Guide - Winter 2019, Comprehensive Midterm Notes - Natural Selection, Evolution, Microevolution
14 Feb 2019
School
Department
Course
Professor
Document Summary
An early definition of evolution: the development of new types of living organisms from pre-existing types (was consistent with the fossil record, this definition predicts the tree of life, and diversity but does not account for adaptation. Individuals with favourable traits will produce more offspring over their lifetime than individuals with less favourable traits. Individuals have to change and adapt to their environment: darwin. Darwinian fitness: the ability of organisms to survive and reproduce in their environment relative to others in the same population. Exaptation: a type of adaptation, a trait that served a different function in the past from its current function, also known as a co-opted trait. Evolution: definition, a change in the heritable traits present in a population over time. A modern definition of evolution: changes in allele frequencies for a given trait in a population over time, over a long period of time, these changes can lead to differences in taxa.
