Warm-Up:
Date
1/5-6
Session
#
Activity
Page
#
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
organisms
(1 cell)
bacteria
Multicellular organisms
(2 or more cells)
Simple plants
ferns
algae
fish
amphibians
Flowering plants
reptiles
mammals
Evolution of living organisms: process thru which species change
over time, due to a change in genetic material that is passed thru
generations.
Two scientists with competing theories of evolution
LAMARK
•French
•Animals acquired
traits during their
lifetime and passed
them on to offspring
•Lamark was wrong!!
•Ex. Giraffes
DARWIN
Two scientists with competing theories of evolution
LAMARK
•French
•Animals acquired
traits during their
lifetime and passed
them on to offspring
•Lamark was wrong!!
•Ex. Giraffes
DARWIN
•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
Darwin’s 4 Principles of Evolution
Activity 1
Darwin’s 4 Principles of Evolution
Overproduction
Darwin’s 4 Principles of Evolution
Overproduction
When plant or animal
reproduces, it makes more
offspring than actually
survive and reproduce
Ex
Activity 2
Overproduction
Variation
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
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
Activity 3
Flow Map
shows order of events
Overproduction
Variation
Adaptation
Darwin’s 4 Principles of Evolution
Overproduction
Variation
Adaptation
• Inherited trait that
gives an organism an
advantage in its
environment over
other members of the
species
Ex
Darwin’s 4 Principles of Evolution
Overproduction
Variation
Adaptation
Selection
•Organisms with
an 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
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.
“SPECIATION IS DUE TO ISOLATION”
Or
“ISOLATION CAUSES SPECIATION”
Kaibab squirrel (left) and Albert’s squirrel
(right).