HLTHAGE 1CC3 Lecture Notes - Lecture 3: Courtship Display, Assistive Technology, Heritability
23 Mar 2017
School
Department
Course
Professor
Document Summary
Adaptations: functional traits or characteristics that help an individual survive and reproduce in their environment. Natural selection: refers to the differential survival and reproduction of organisms as a result if heritable differences between them ex. Individual differences: variations among any sees for any characteristic. 1: differential reproduction: affects individuals chances at reproducing, heritability: genetic basis that offspring will resemble parents. Selective transmission: characteristics that help an individual survive and reproduce are selectively transmitted to consecutive generations ex. blue sh will survive in blue water vs red. Stabilizing selection: selection against any traits that are different from species-typical adaptive design (helps keep traits stable over time) Selection favours changes that are atypical, natural selection cannot occur if all species is the same reproduction times vary - individuals do not reproduce @ same time/rate requirements for natural selection to occur: 1: heritable traits give rise to differential reproduction, differences in population - individuals of a population are not identical to one another.
