Lecture 3 - 1) Previous Lecture: Information contrasted in...

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

View Full Document Right Arrow Icon
1) Previous Lecture: Information contrasted in the Bible, Darwin’s 4 Postulates, etc. Evidence for the Theory of Evolution 2) Direct observation on a small scale, especially as a result of artificial breeding. a) Ex.) Cauliflower, Broccoli, Brussels sprouts all come from the same seed of wild mustard. 3) Homology a) Similarity due to common ancestry. Arms of certain animals have different function but similar structures (all mammals have the same skeletal structures). Homologous structures don’t have to have the same function. b) Ex.) The Genetic Code – Pretty much the same for all organisms with differences here and there, and shows relationship between all life. c) Analogous Traits – Things with similar functions, but made of different components – due to independent evolution. d) Ontology does NOT recapitulate phylogeny 4) Vestigial Structures a) Structures that have no function, but are there because of evolutionary history. a.i) Ex.) Whale has a pelvis but no legs
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/09/2012 for the course BIOL 104 taught by Professor Smith during the Spring '09 term at Arkansas State.

Page1 / 2

Lecture 3 - 1) Previous Lecture: Information contrasted in...

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