Warm-Up:Date Session

#Activity Page

#1/5-6 Hidden Organism 24

Darwin’s 4 Principles 25

Can U Survive?Rock Pocket Mouse

26

1.Vocab definitions & images/examples

2.Can U Survive? •Sketch the organism that could be the result of the activity•Label the adaptations

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

TLW explain the principles of evolution by relating each principle to an element of a classroom activity, completing analysis questions after viewing a video, then illustrate the resulting evolved organism and explain each adaptation.

Hidden Organism p.

• 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 p24of your notebook. Describe any other organisms you can think of with this type of adaptation.

Geologic Time Scale records the evolution of life

Unicellular Multicellular organisms organisms (1 cell) (2 or more cells)

fish amphibians reptiles mammals

bacteria algaeSimple plants ferns

Flowering plants

Evolution of living organisms: process thru which species change over time, due to a change in genetic material that is passed thru generations.

LAMARK DARWIN•French•Animals acquired traits during their lifetime and passed them on to offspring•Lamark was wrong!!•Ex. Giraffes

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 supportEx: Galapagos Isles Finch beaks

Two scientists with competing theories of evolution

Darwin’s 4 Principles of Evolution

Activity 1

Darwin’s 4 Principles of Evolution

Overproduction

Darwin’s 4 Principles of Evolution

Activity 2

Overproduction

When plant or animalreproduces, it makes moreoffspring than actuallysurvive and reproduce

Ex

Overproduction Variation

Overproduction Variation•There are naturallyoccurring variations (differences)in traits due to differentgenetic material or dueto mutations•Variations get passed onto offspring

Activity 3

Overproduction Variation•There are naturallyoccurring variations (differences)in traits due to differentgenetic material or dueto mutations•Variations get passed onto offspring

Ex

Flow Mapshows order of events

Overproduction Variation Adaptation

Darwin’s 4 Principles of Evolution

Overproduction VariationAdaptation•Inherited trait thatgives an organism anadvantage in its environment overother members of thespecies

Ex

Darwin’s 4 Principles of EvolutionOverproduction Variation Adaptation Selection

•Organisms withan adaptation will survive to reproduce and pass on the adaptation“Survival of the Fittest”

Ex

Relate the activity to the principles

You saw Darwin’s 4 Principles of Evolution modeled during this activity. On your notes, specifically describe where in the activity you saw each of the 4 principles.

Can you survive?

Write an analysis of this activity which answers the following:

– 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?

Rock Pocket Mouse Evolution

Isolation

2 populations of the same species are

separated

Speciation

evolution of a new species

from an old onedue to

environmental changes.

They can’t reproduce

with each other

Different mutations occur in each population

“SPECIATION IS DUE TO ISOLATION”

Or

“ISOLATION CAUSES SPECIATION”

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