1. WARM-UP What is genetic drift? Name 2 examples of genetic drift?
Explain one example from #2.
List 2 examples of adaptation.

2. Speciation
Members of a reproducing population change so much that they can no longer produce offspring with members of a original population.
2 types
Allopatric speciation
A physical barrier divides one population into more than one population
Sympatric speciation
A species evolves into a new species without a physical barrier

3. Allopatric Speciation

4. Patterns of Evolution
Speciation is a long process, and first hand accounts are expected to be rare.
However, speciation is visible in patterns of evolution
Adaptive radiation (Divergent evolution)
Rapid diversification of a
species into a number of
different species

5. Patterns of Evolution Convergent Evolution
Unrelated species evolve similar traits even though they live in different parts of the world.
Occurs in environments that are far apart but that have similar in ecology and climate

8. hedgehogs porcupines echidnas Europe N. America Australia

9. Beak differences in Hawaiian honeycreepers

10. Anteater Central & S. America Australia

12. MIND MAPS Create a MIND MAP using all of the following terms Be sure to link them all together
Word List
Evolution -Mimicry
Charles Darwin -Bottleneck
DNA sequencing -Advantageous
Embryo -Phenotype
Natural Selection -Founder Effect
Comparative Anatomy -Camouflage
Fitness -Vestigial Structure
Adaptation -Directional Selection
Stabilizing Selection -Trait
Homologous structure -Disruptive Selection
Potential Subject Categories
Mechanisms for Evolution
Evidence for Evolution
Theory of Natural Selection

13. USE COLOR, IMAGES, STRUCTURE, WORD, LINES
IN THE END YOUR MIND MAP SHOULD FLOW ALL CONCEPTS TOGTHER

19. Lesson Closure 3 things you learned in class today
2 questions you have about the lesson
1 real-life connection

20. Which of these conditions can act on
Chapter 15
Evolution
15.3 Exit Ticket
Which of these conditions can act on
phenotypes to provide adaptive advantages
to a population?
mutations
natural selection
nonrandom mating
small population size

21. Chapter 15
Evolution
15.3 Exit Ticket
Why does the ratio of gray to red owls remain the same after the population has doubled?
They each have different predators.
They compete with one another for resources.
Both are equally adapted to survive in their
environment.
New individuals have emigrated into the
population.

22. Which description is evidence that a speciation has taken place?
Chapter 15
Evolution
15.3 Exit Ticket
Which description is evidence that a speciation has taken place?
A physical barrier has caused two groups from a
population to adapt to different environments.
Some members can no longer produce fertile
offspring with members of the original population.
A small group has developed mating behaviors that
are different than those of the rest of the population.
Some members from a population have developed
physical characteristics that are different than the
original population.

23. Which evolutionary pattern is represented by
Chapter 15
Evolution
15.3 Exit Ticket
Which evolutionary pattern is represented by
the similarities between these two organisms
that live on separate continents?
coevolution
convergent evolution
directional evolution
divergent evolution

24. Chapter 15
Evolution
15.3 Exit Ticket
The rapid evolution of these cichlid fish in new water is an example of what type of speciation?
coevolution
mutation
adaptive radiation
convergent evolution

25. Why are cheetahs so genetically similar that they appear inbred?
Chapter 15
Evolution
15.3 Exit Ticket
Why are cheetahs so genetically similar that they
appear inbred?
Individuals in the population had mated
randomly.
Their population had declined to a very low
number.
A large sample of the population settled in a
separate location.
A mutation appeared and became common in
subsequent generations.

26. Within a population of squirrels, those that
Chapter 15
Evolution
Standardized Test Practice
Within a population of squirrels, those that
live higher in the mountains where it is
cooler have long fur. Squirrels that live in
the foothills where it is warmer have short
fur. The original population is believed to
have had intermediate fur length. Which
graph represents this type of natural
selection?

27. Standardized Test Practice
Chapter 15
Evolution
Standardized Test Practice

28. The remaining bacteria will die because of the drastic decimation
Chapter 15
Evolution
15.3 Exit Ticket
What is the most likely effect of killing 80% of a colony of bacteria with a certain antibiotic?
The remaining bacteria will re-grow into a new colony more resistant to the antibiotic
The remaining bacteria will die because of the drastic decimation
The bacteria will not cause any further infections because their numbers were drastically reduced
The bacteria will try to start a new colony where the antibiotic will not be found