1. IN 13 Heading Vocabulary Important Info
Evolution (Part 1)
IN 13
Heading
Vocabulary
Important Info

2. Incorrect Theories of Evolution: Lamarck
Lamarck proposed an incorrect mechanism for how organisms evolve
Simple life forms continually came into existence from dead matter
Continually become more complex
More "perfect" -- as they transformed into new species.
He correctly pointed out that change in species is linked to an organism’s environment.

3. Linnaeus (1707-1778) Swedish Botanist
Tried to Classify all of life on earth
Kingdoms, Classes, Orders, Genera, & Species
He influenced Darwin’s Theories
Today we classify life by this order:
Kingdom (Keep)
Phylum (Pots)
Subphylum(Sparkling)
Class (Clean)
Order (or)
Family (Food)
Genus (gets)
Species (Stuck!)

4. Write 5 facts from the short video clip on Darwin…
Who Was Charles Darwin
Label your paper :
Write 5 facts from the short video clip on Darwin…

5. Darwin’s Observations
Animals on the coast of S. America:
Resembled those on the nearby islands
Evolved differences Or
Descended w/ modification after separating from a common ancestor.

6. Darwin’s Great Voyage!!!

9. IN 15 & 17 Heading Vocabulary Important Info
Evolution (Part 2)
IN 15 & 17
Heading
Vocabulary
Important Info

10. Growth of Populations Darwin was influenced by Thomas Malthus
He wrote:
Populations grow as much as the environment allows.

11. Evolution by Natural Selection
The process of:
“Survival of the Fittest”
Organisms that adapt to their environment survive while those that do not adapt disappear
N.S. leads to adaptations in a population.

12. Natural Selection Video
Label Paper:
Genetic Variation a. b.
Overproduction of Offspring a.
Struggle for Existence a.
Differential Survival & Reproduction a.
Natural Selection Video
6 min 39 sec

13. Darwin’s Ideas Updated
1) Change Within Populations
N.S. causes the frequency of certain alleles in a population to change over time.
2) Species Formation
Under certain conditions, change within a species due to reproductive isolation can lead to new species.
3) The Tempo of Evolution
Gradualism is a process of evolution in which speciation occurs gradually
Punctuated Equilibrium is a process in which speciation occurs rapidly between periods of little or no change.

15. Evidence of Evolution--Formation of Fossils
Evidence of orderly change can be seen when fossils are arranged according to their age.

16. Anatomy and Development
Vestigial Structures
Reduced or nonfunctional vestigial structures
hind limbs in whales
provide evidence of an organism’s evolutionary history.

17. Whale Evolution Video Label Paper 1-5
5 min, 9 sec

18. Homologous Structures
Structures in different organism that indicate a shared ancestry
include vertebrate forelimb.

20. Evidence of Evolution--
Biological Molecules
Proteins
MORE differences in amino acid sequences of distantly related species
LESS differences between species that are more closely related.
Nucleic Acids (what is a nucleic acid???)
MORE differences in DNA sequences b/t distant relatives

21. Examples of Evolution--
Natural Selection at Work
1) Factors in Natural Selection
Organisms w/traits helping them survive—reproduce & pass genes.
2) Evolution of Antibiotic Resistance
Experiments show that evolution through N.S. has occurred within populations of antibiotic-resistant bacteria
Tuberculosis bacteria
3) Evolution in Darwin’s Finches
Experiments show that evolution through N.S. has occurred in beak size in Darwin’s Finches.

22. Formation of New Species
1) Speciation
Speciation begins as a population adapts to its environment.
2) Forming Subspecies
Populations of the same species that differ genetically b/c of adaptations to different living conditions are called: subspecies.
Newly formed subspecies are on the road towards speciation.
3) Maintaining New Species
Reproductive isolation through barriers keeps species from breeding with one another.

23. Dichotomous Keys Tool used when new species is found
Used to categorize different species based on physical characteristics
Classification is a way of separating a large group of closely related organisms into smaller subgroups.
A Dichotomous Key is a listing of characteristics, such as structure and behavior, organized in such a way that an organism can be identified or classified.