UCSB EEMB 2 - Lec #10 EEMB 2 SM17 1S (Evol. Thought) (1) (20 pages)

Previewing pages 1, 2, 19, 20 of 20 page document View the full content.
View Full Document

Lec #10 EEMB 2 SM17 1S (Evol. Thought) (1)



Previewing pages 1, 2, 19, 20 of actual document.

View the full content.
View Full Document
View Full Document

Lec #10 EEMB 2 SM17 1S (Evol. Thought) (1)

45 views


Pages:
20
School:
University of California, Santa Barbara
Course:
Eemb 2 - Introductory Biology III

Unformatted text preview:

Evolution Evolution Change through space and time Biological Evolution Genetically based change in a line of descent over time descent with modification Individuals of populations show different forms of their traits The frequencies of different forms relative to one another can change over successive generations Common public perception of evolution is orthogenesis straight line Incorrect Branching Correct Development of Evolutionary Thought The earliest roots of modern evolutionary theory begins with origin myths superstition to explain the natural world Roots of western philosophy Aristotle 350 BC Created the Scala naturae a hierarchy of life Stoic Philosophers 1st century AD followers of Zeno humans free from passion recognized fossils as evidence of past life that had been destroyed by catastrophes Development of Evolutionary Thought Rise of Rome and Christianity A chain of being from lowest to highest forms each being was a separate link in the chain all links were designed forged at the same time at center of creation and were immutable Albertus Magnus 1300 AD removed humans from scale of nature Sir Thomas Aquinas 1300 AD humans are divine Homunculus theory soul transferred at fertilization Development of Evolutionary Thought Theory of creationism god created the earth and all life on it life was immutable and did not change the earth is young 6000 10 000 yrs Development of Evolutionary Thought Basic questions about life 1 Biogeography examination of global distribution of animals Observations many plants and animals are unique to isolated places certain species separated by great distances resemble one another Rhea South America Emu Australia Ostrich Africa Development of Evolutionary Thought Basic questions about life 1 Biogeography examination of the global distribution of animals Observations many plants and animals are unique to isolated places certain species separated by great distances resemble one another Questions How did so many species get from one point of creation to isolated places on earth What did the similarities and differences among them mean Development of Evolutionary Thought Questions about life 2 Comparative Morphology the study of similarities and differences plans between major groups Observations human arms whale flippers bat wings differ in size shape and function yet have similar locations in the body 21 3 4 5 in body 21 3 4 1 2 3 2 34 1 1 5 2 4 5 3 1 2 3 Development of Evolutionary Thought Questions about life 2 Comparative Morphology the study of similarities and differences in body plans between major groups Observations human arms whale flippers bat wings differ in size shape function yet have similar locations in the body backbone pelvic girdle coccyx bones Questions Why are some animals that are so different in some features so much alike in others Why were there parts with no functions thighbone attached to pelvic girdle small bone attached to pelvic girdle Development of Evolutionary Thought Questions



View Full Document

Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Lec #10 EEMB 2 SM17 1S (Evol. Thought) (1) and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Lec #10 EEMB 2 SM17 1S (Evol. Thought) (1) and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?