Lecture2outline

Lecture2outline - Change over time in patterns of variation...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
BIOEE 2780 Spring 2010 Evolutionary Biology and Diversity R. Harrison LECTURE 2: EVOLUTION AS FACT AND THEORY Major concepts and questions: Diversity, adaptation (“good fit”), and change over time are fundamental observations that motivate the study of evolutionary biology. Evolution is both fact and theory. Biologists ask: What is it? How does it work? How do structure and function vary within and among taxa? How did it come to be the way it is? Outline Observations that motivate studies of evolution. Diversity of form and function. Examples: Harrison lab organisms, regional floras and faunas, Hawaii, dogs. Adaptation or “good fit” of organisms to their environment. Examples: crypsis and mimicry.
Background image of page 1

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

View Full Document Right Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Change over time in patterns of variation and patterns of diversity. Examples: organisms common 500 mya no longer around; likewise dinosaurs; organisms common now not found long ago BIOEE 2780 Lecture 2 2 Evolution is both fact and theory. Change over time, descent with modification, evolution by natural selection. Questions biologists ask. Descriptive, mechanistic (What is it? How does it work?) Comparative (How do structure/function vary among taxa?) Historical (How did it come to be this way?) “Nothing in biology makes sense except in the light of evolution.” (Theodosius Dobzhansky). An evolutionary perspective provides insights at all levels of biological organization....
View Full Document

{[ snackBarMessage ]}

Page1 / 2

Lecture2outline - Change over time in patterns of variation...

This preview shows document pages 1 - 2. Sign up to view the full document.

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