1. Warm-Up: Study for Earth’s History Test Date Session # Activity Page #
2/7-8
Hidden Organism
Evolution of life “recap”
Mouse Hunt 17
Genotype Phenotype Review 18
Conflicting Evolution Theories
Darwin’s 4 Principles 19
Can U Survive? 20
Rock Pocket Mouse 21

2. 8.L.4 Understand the evolution of organisms and landforms based on evidence, theories and processes that impact the earth over time. 8.L.4.1 Summarize the use of evidence drawn from geology, fossils, and comparative anatomy to form the basis for biological classification systems and the theory of evolution 8.L.4.2 Explain the relationship between genetic variation and an organism’s ability to adapt to its environment

3. TLW explain the principles of evolution by relating each principle to an element of a classroom demonstration, completing analysis questions after viewing a video.

4. Hidden Organism p.17
You will have 1 minute to search the room for an organism that “lives” in the classroom.
Your are this organism’s predator.
The organism is shaped like this:
When you find it/them, TELL NO ONE!
Return to your seat and describe this activity and the adaptation of this species on 17 of your notebook. Describe any other organisms you can think of with this type of adaptation.

5. Geologic Time Scale records the evolution of life
Unicellular Multicellular organisms
organisms
(1 cell) (2 or more cells)
Simple plants
ferns
Flowering plants
bacteria
algae
fish
amphibians
reptiles
mammals

6. Evolution of living organisms: process through which species change over time, due to a change in genetic material that is passed through generations. Mouse Hunt Think and write…what did you notice? Early conclusions?

7. Genotype Phenotype review
Genotype is the alleles, or variations, of a gene that are carried by an organism. Organisms inherit one copy of each gene from each parent.
Genotypes are represented using letters for each allele. Capital letters represent the dominant allele, lower case letters represent the recessive allele. GG, Gg and gg all represent different genotypes for the same trait. The capital or lower case g’s represent the different alleles for the gene.
Phenotype describes how the genotype is expressed in an organism. Phenotype is how an organism looks (physical traits) based on the genotype. Different genotypes can produce different phenotypes for a trait.

9. Two scientists with competing theories of evolution p19
LAMARK
DARWIN
French
Animals acquired traits during their lifetime and passed them on to offspring
Lamark was wrong!!
Ex. Giraffes

11. Two scientists with competing theories of evolution
LAMARK
DARWIN
French
Animals acquired traits during their lifetime and passed them on to offspring
Lamark was wrong!!
Ex. Giraffes
British
Natural Selection: members of a species that are best suited to environment will survive and reproduce
4 principles to support
Ex: Galapagos Isles Finch beaks

13. Darwin’s 4 Principles of Evolution
Overproduction

14. Darwin’s 4 Principles of Evolution
Overproduction
When plant or animal
reproduces, it makes more
offspring than actually
survive and reproduce Ex

15. Overproduction
Variation

16. Overproduction
Variation
There are naturally
occurring variations (differences)
in traits due to different
genetic material or due
to mutations
Variations get passed on
to offspring

17. occurring variations (differences) in traits due to different
Overproduction
Variation
There are naturally
occurring variations (differences)
in traits due to different
genetic material or due
to mutations
Variations get passed on
to offspring Ex

18. Flow Map shows order of events
Overproduction
Variation
Adaptation

19. Darwin’s 4 Principles of Evolution
Variation
Adaptation
Inherited trait that
gives an organism an
advantage in its
environment over
other members of the
species
Overproduction Ex

20. Darwin’s 4 Principles of Evolution
Overproduction
Selection
Organisms with
an adaptation will
survive to
reproduce and
pass on the
adaptation
“Survival of the Fittest”
Variation
Adaptation Ex

21. Can you survive? Answer the analysis questions for this activity:
Why did some members of this species not survive?
What adaptations of different traits help some members survive while others did not?
Did all members without an adaptation die immediately?
What would happen to this species if the environment changed?

22. Rock Pocket Mouse Evolution
Answer video questions. Make sure to explain your answers.

23. same species are separated
Isolation
2 populations of the
same species are separated
They can’t
reproduce
with each other
Different
mutations
occur in each
population
Speciation
evolution of a
new species
from an old one
due to
environmental
changes.

24. “SPECIATION IS DUE TO ISOLATION” Or “ISOLATION CAUSES SPECIATION”

27. Kaibab squirrel (left) and Albert’s squirrel (right).