1. February 28, 2017 Launch: Review book page 162 questions 9-12.
Objective:
I can explain LaMarck’s theory of “use and disuse” and why it is wrong.
I can explain Darwin’s theory of ‘Natural selection” and its “requirements”
Launch: Review book page 162 questions 9-12.
Homework:
Review book, read pages 155 – 159. Answer questions 1-8 p DUE WED.
Mutant Dinosaur project DUE FRI 3/3/17.
Castle leaning & Quiz FRIDAY 3/3.
Parent – Teacher conferences Thursday 3/8/17

2. LAUNCH Page 162 #9-12 9) 2
10) 4
11) 3
12)
The diagrams support the concept of common ancestry.

3. Homework

4. Theories of Evolution Lamarck
Use and disuse – new organs arise according to the needs of the organism, unused organs are lost “Use It or Lose It”
Transmission of acquired characteristics- characteristic acquired by an individual are passed on to the offspring
Ex –Man lifts weights and becomes muscular and his offspring will be born muscular?
Ex- Woman learns piano – children will be good pianists?

5. This Theory is Wrong!

6. Weismann – cut the tails off mice to see if offspring would be born without tails
All offspring had tails
Disproved Lamarcks Theory!

7. You cannot inherit “acquired” characteristics!
This woman has become very good at basketball through PRACTICE.
Will she transmit this trait to her offspring?
NO! Why?
Practice does not affect your DNA!!!!!

8. Darwin’s Theory of Evolution
Darwin was the naturalist on the ship the HMS Beagle( )
He made many observations of fossils and animals that he saw in South America and the Galapagos Islands

9. Upon his return and after much research he come up with several related theories:
1. Evolution did occur
2. Evolutionary change is gradual, occurring over thousands to millions of years
3. The primary mechanism for evolution is a process called natural selection

10. 1859: Charles Darwin: The Theory of Evolution: It works through Natural Selection.

11. Darwin

12. Example of Natural Selection:
Variety of neck lengths existed.
Shorter necks were weeded out.
Long necks reproduced and passed on the long-neck gene.

13. Darwin’s Theory of Evolution
Evolution occurs as a result of natural selection and variation

14. March 1, 2017 Launch: Review book page 171 questions 1-10. Homework:
Objective:
I can explain LaMarck’s theory of “use and disuse” and why it is wrong.
I can explain Darwin’s theory of ‘Natural selection” and its “requirements”
Launch: Review book page 171 questions 1-10.
Homework:
Review book, pages answer questions DUE Thurs.
Mutant Dinosaur project DUE FRI 3/3/17.
Castle leaning & Quiz FRIDAY 3/3.
Parent – Teacher conferences Thursday 3/9/17

15. HW Page 160 #1-8 1) 1 2) 3 3) 4 4) 5) 1 6) 3 7) 2 8) 4

16. Launch 171 #1-10 1) 3 2) 1 3) 2 4) 5) 4 6) 4 7) 8) 2 9) 3
10)

17. Overproduction
In each generation, more offspring are produced than can survive
This leads to :

18. Overproduction: finding Nemo
Youtube
Overproduction: finding Nemo
Finding Nemo opening:
Finding Nemo last egg:

19. Competition
Individuals struggle to survive by competing for food, water, shelter, mates etc

20. Variation
Characteristics that are different among organisms of the same species
Ex- size, strength, color, disease resistance

21. Adaptations
An inherited trait that increases an organism’s chance of survival

22. Adaptations

23. Adaptations

24. Favorable Adaptations
= Helpful variations that are passed through the species.

25. March 2, 2017 Launch: Review book page 171 questions 1-10. Homework:
Objective:
I can explain LaMarck’s theory of “use and disuse” and why it is wrong.
I can explain Darwin’s theory of ‘Natural selection” and its “requirements”
Launch: Review book page 171 questions 1-10.
Homework:
Review book, pages answer questions DUE Thurs.
Mutant Dinosaur project DUE FRI 3/3/17.
Castle leaning & Quiz FRIDAY 3/3.
Parent – Teacher conferences Thursday 3/9/17

26. HW Page #11-18
11) 1
12)1
13)2
14) 1
15) 3
16)
Species B & C have a common ancestor F that is more recent than the common ancestor H of species A & C.
17) 4
18) 3

27. Launch 174 # # 26-28 p
p. 176
19)
The species could become extinct.
20)
Mutations change DNA resulting in new traits.
26) 4
27) 3
28) 2

28. Survival of the Fittest
The organisms that are best adapted to the environment will live long enough to reproduce

29. How did deer evolve to be fast runners?
Variety existed.
Overproduction of deer.
Predators apply pressure.
Slow deer are weeded out.

30. Survival of the Fittest
Variety
Survival of the Fittest

31. Reproduction
Surviving individuals pass their traits on to their offspring

32. Speciation
An accumulation of passed on variations will allow a new species to form

33. SPECIATION: Formation of new species.
(When several changes build up over a long period of time.)

34. Bee Orchids Evolved from a common ancestor.
But can no longer mate with each other.

35. Evolved from a common ancestor but can no longer mate with each other.

36. Evolution Individuals do not evolve. Populations do.
A change in the genetic make-up of a POPULATION over time.

37. Natural Selection STEPS:
Variety already exists due to…
MUTATION (radiation or replication mistakes)
SEXUAL REPRODUCTION (meiosis)
A “selective pressure” exists which weeds out the “Less Fit”.
Only the fittest survive and reproduce.
The population as a whole is different than before.
selection

38. Darwin’s Theory does not explain a genetic basis for the variations that occur in organisms

39. DeVries stated that mutations were a source of new traits that permits evolution to occur

40. Why are mutations often called the raw materials of evolution?

41. Practice questions

42. Practice questions

43. The Beaks of Finches NYSED Lab
Michael Comet
South Lewis High School
Turin, NY

44. Who said this? Darwin or Lamarck?
"The giraffe is obliged to browse on trees and continually is forced to stretch upwards. This habit, maintained over long periods of time, has resulted in the forelimbs becoming longer than the hind ones, and the neck so elongated that the giraffe can raise its head to a height of 18 feet without taking its forelimbs of the ground."
LAMARCK

45. The peppered moth is an example of…
Evolution by the process of…
Natural Selection

46. Darwin or Lamarck? LAMARCK
Due to a need, organisms acquired the ability to move from water onto the land.
LAMARCK

47. Lamarck is wrong
Which statement would most likely have been used by Lamarck to explain the development of a long trunk in elephants?
Elephants stretched their trunks to reach a food supply, and this longer trunk was passed on.
A mutation occurred, and its frequency increased in later generations.
Elephants with longer trunks had a higher survival rate, and the longer trunk was passed on.
Elephants with short trunks were most likely sterile.

48. Closure questions
Answer the following questions