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Do Now:
1. What do you know about
evolution?
2. Have you ever heard of Charles
Darwin?
REVIEW!!!!
Before we look at evolution, lets review
some key concepts…
Can you tell me what traits are ? How
about DNA? How about mutations?
Word
1. Traits
Definition
Picture
Characteristics
organisms have due to
their genetics
Example: Brown
hair, blue eyes, long
fur, feathers
Word
Definition
Picture
Deoxyribonucleic acid,
2. DNA
Molecule in the
nucleus of our cells
that tell our cells
what to do
You get half your
DNA from you mom,
half from you dad
Word
3.
Mutations
Definition
Picture
Changes in DNA, could
be harmful or helpful
Think about this question: How have
phones devices changed?
Think about this question: How
have personal musical devices
changed?
Word
1.
Evolution
Definition
Picture
change in the
hereditary features of a
species over time - due
to mutations in their
DNA
Horse Evolution
Whale Evolution
Word
2.
Charles
Darwin
Definition
Theory of Natural
Selection about
evolution
it is still accepted
today
Picture
Darwin’s Observations
Darwin went on an expedition to the
Galapagos Islands and became the
ship’s naturalist. (He studied plants and
animals at every island they stopped.)
Darwin collected many plants and animals
and observed many new species in the
Galapagos Islands.
Species – group of organisms that can
reproduce successfully
Many different species of finches, but they
lived so close?
Word
3.
Species
Definition
Group of
organisms that
can mate with
one another to
produce fertile
offspring
Picture
Word
4.
Adaptation
Definition
A characteristic
that helps an
organism
survive and
reproduce in its
environment
Examples: polar
bear fur, bird
wings
Picture
NOTE!
Adaptations are caused by
mutations in DNA. An
organism cannot CHOOSE
to have an adaptation and
then pass it on to their
children!!
Darwin’s finches: adaptations:
- bird beak shapes are examples of
adaptations
Questions
1. What is evolution?
2. Some insects look just like sticks. How
could this be an advantage to the
insects?
3. What are some adaptations that a shark
has?