1. BellRinger!!! Write the Learning Target and Topic in your notebooks
Unit 1 test Recap 5 Minutes only!!!!!

2. Unit 1 Test Re-cap
The graph below represents a change in event A that leads to changes in events B and C.
Which row in the chart the the right best shows the correct sequence of events that are increasing or decreasing as show on the graph to the left?
Directions: Complete all of the following for the question above.
GIST: (In one sentence, explain what the question is about) (2 points)
___________________________________________________________________
CORRECT ANSWER: (1 point)
EXPLANATION: (Why is this the correct answer?) (4 points)
REFLECTION: (After grading this question answer the following) (3 points)
I was CORRECT INCORRECT (Check one!)
BECAUSE _____________________________________________________________

3. Student, What did we talk about last class?
Student, can you add anything else to that?
Student, what was the formula to Differential Selective Success?

4. How do organisms evolve?
Natural Selection:
“Survival of the fittest”
Leads to Evolution...

5. Student, what evidence is available to let us know Natural selection has taken place?
Student, are there any other evidence what can tell us natural selection has occurred?
Student, can you unpack the what the other 2 students said?

6. Write what is in Red...

7. Mechanisms of Natural Selection
Gene Flow
Genetic Drift
Nonrandom Mating
Mutations

8. Gene Flow: the exchange of genes due to migration
Mutations occur over time. They are natural and produce genetic diversity that is needed for survival.

9. Student, how does gene flow lead to the evolution of a population?
Student, Can you add anything to what that student said?
Student, can you unpack what they both just said?
Student, do you think gene flow is a natural process?

10. Do you support or challenge what they just said? Why?
Student, can this happen in all populations?

11. Microevolution
10/27/15
Gene Flow in Plants
G. Podgorski, Biol. 1010

12. Microevolution
10/27/15
Gene Flow in Humans
G. Podgorski, Biol. 1010

13. Microevolution
10/27/15
2. Genetic drift: the change in the gene pool of a population due to a random occurrence.
G. Podgorski, Biol. 1010

14. Student, how does genetic drift lead to the evolution of a population?
Student, Can you add anything to what that student said?
Student, can you unpack what they both just said?

15. Example of Genetic Drift

16. Genetic Drift Example
Northern elephant seals have reduced genetic variation because humans inflicted on them in the 1890s. Hunting reduced their population size to as few as 20 individuals at the end of the 19th century. Their population has since rebounded to over 30,000 but their genes still carry the marks of this predation. They have much less genetic variation than a population of southern elephant seals that was not so intensely hunted.

17. Student, do you support or challenge what that student just said?
Student, do you think there is a lot of genetic variation in the heavily predated seals?
Student, do you support or challenge what that student just said?
Student what does it mean in the long run for the heavily predated seal population in terms of their genetic variability
Student, do you think this makes their population at risk for a natural disaster?

18. Difference in Genetic Drift and Gene flow...
Student, what is the difference between genetic drift and gene flow
Student, can you add anything to what the student said.

19. 3. Non-Random Mating
A situation where mates are chosen for one another or by another pre-determined factor.
Leads to a loss of gene variability!
Many plants self-pollinate, which is also a form of non-random mating (inbreeding).

20. Non-Random mating Student, can this mechanism happen in humans?
Do you support or challenge what student said?

21. Sexual reproduction results
in variation of traits in offspring
as a result of crossing over in
meiosis and mutations
Genetic shuffling is a source
of variation.

22. Sexual selection occurs when certain traits increase mating success.

23. Mutation
Introduce new alleles into a gene pool causing evolution to occur.

25. Study for BIO-BLITZ
If you have not looked at the words on the class instagram you need to…
Also review all words in your notebook

26. Output 4 minutes...
Based on the 4 mechanisms we just talked about, how do they lead to evolution….

27. We do….
Go the 3 stations you have 5 minutes per station. Listen for the timer

28. Independent Practice
You have 10 minutes to answer the questions the 6 questions.
2 are short response
Raise your hand if you have any questions

29. Exit ticket Put all notes away!!!!! 5 minutes to take this quiz
You will do great!!!!!