Chapter 18 and 19 - Natural Selection Understand the...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
Natural Selection Understand the difference between evolution and natural selection. Be aware of Lamarck’s theory of acquired characteristics, why this mechanism for evolutionary change is impossible, and how this theory differs from Darwin’s proposal of natural selection.
Background image of page 1

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

View Full DocumentRight Arrow Icon
Natural Selection Understand the historic evidence for the occurrence of evolution and how that evidence has been supported by modern molecular analysis. Understand the mechanism by which Darwin proposed that evolution occurred. Be able to describe the synthetic theory of evolution.
Background image of page 2
Natural Selection Adaptation (quality of being “alive”) How did organisms come to be? Population -------------> Species |--------------> Species Species: Group of organisms with similar structure, function, and behavior that are capable of interbreeding with one another
Background image of page 3

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

View Full DocumentRight Arrow Icon
Natural Selection Evolution: change in characteristics of populations over the course of generations Microevolution Vs. Macroevolution Relevance? Pesticide resistant insects Antimicrobial resistant pathogens Bioremediation
Background image of page 4
History Aristotle: “organisms imperfect” Da Vinci: Fossils ----> Extinct organisms
Background image of page 5

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

View Full DocumentRight Arrow Icon
Jean Baptiste de Lamarck Change over time as a result of some natural phenomenon Organism changed behavior used some organs or body parts more and others less Several generations Giraffes and long necks Hypothesis viable until………………
Background image of page 6
Charles Darwin HMS Beagle Galapagos Islands (birds and plants) Similarities to South America? Differences from South America? Slow pace of geologic processes Earth much older than thought
Background image of page 7

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

View Full DocumentRight Arrow Icon
Charles Darwin Breeders could produce many varieties of domesticated animals in a few generations Selective breeding (artificial selection) New dog breeds New vegetables from same plant species
Background image of page 8
Charles Darwin Thomas Malthus: population growth not always desirable Population expands geometrically (1 2 4 8 16 ) Food source expands arithmetically (1 2 3 4 ) Competition Adaptation
Background image of page 9

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

View Full DocumentRight Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/07/2009 for the course BIO 101 taught by Professor Don during the Fall '09 term at Ivy Tech Community College.

Page1 / 40

Chapter 18 and 19 - Natural Selection Understand the...

This preview shows document pages 1 - 10. Sign up to view the full document.

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