BIO120H1 Lecture Notes - Lecture 1: Outcrossing, Microevolution, Theodosius Dobzhansky
36
BIO120H1 Full Course Notes
Verified Note
36 documents
Document Summary
Large questions: hard to answer, require multiple lines of. How questions: (proximal) physiological or genetic mechanisms that might be responsible for a specific trait or character. Why questions: (ultimate) why that character evolved, determining the ecological function and adaptive significance of a trait. Observation: first ask questions, then describe and quantify. Theoretical: develop models [verbal (what you think is going on), graphical (what do you think it can affect the population), mathematical] Comparative (collecting the same kind of data from many. We focus on populations because this shows how evolution happens. Small questions: solving small questions can help to answer a big. Experimental (manipulate a system to address a specific different species) hypothesis) Assumptions about evolution verified by scientific study. Lineages split or branch by speciation, resulting in the generation of biodiversity. Most evolutionary change results from natural selection. Natural selection is the only process responsible for the evolution of biodiversity and adaptation.
