Download Evolution Notes

Warm up –Justify answer
• 1. A scientist has a hypothesis that a large volcanic eruption caused
a change in global temperature. Which information gained from ice
cores is most useful in supporting the scientist’s hypothesis.
A levels of dissolved oxygen B identities of trace metals
C estimates of natural
D amounts of atmospheric
radioactivity
dust
2. Why do scientists study fossils?
A to understand how volcanoes are formed
B to understand life on Earth as it was millions of years
ago
C to understand when mountains were created
D to help predict the future.
Write in Cornell note style
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1. What is biodiversity?
2. What does evolution mean?
3. What can cause this and how?
4. What is the theory of evolution
5. Who is the father of this theory and why?
6. How did he come up with his theory?
7. What did his travels reveal?
8. What did he observe?
9. Why was his voyage important?
What is Biological Diversity?
• Earth has millions of organisms
of every
imaginable shape, size, and
habitat.
The variety and abundance
of species that make up a
biological community is
called biodiversity..
The Big Question is …
How did all these
different organisms
arise?
How are they
related?
What is “evolution”?
• Evolution means change over time.
What causes this change?
 Mutations - a permanent change
in the DNA sequence of a gene
What is “evolution”?
• Evolution means change over time.
What is an adaptation?
 An adaptation is a feature that is
common in a population because it
provides
some improved function.
What is the Theory of Evolution”?
• Change in the gene pool of a population from
generation to generation by such processes as
mutation, artificial/natural selection, and genetic
drift.
Timeline of Theory
1785 James
Hutton
postulated that
the earth was
formed by an
ancient
progression of
natural events,
including
erosion,
disruption, and
uplift.
1830 Charles
Lyell published
evidence pushing
the age of earth
back several
million years.
Early 1800’s
George Cuvier
suggested that
the earth was
6,000 years oldbased on his
calculations.
1858 Alfred
Russell Wallace
publishes similar
theory of
evolution.
1838 Charles
Darwin starts to
theorize on
evolution.
Who is considered the Father of
Evolution?
Charles Darwin
The first person to explain the cause of
biological diversity
How did Darwin come up with
his Theory of Evolution?
1.Charles Darwin (1809-1882)
Sailed around the world 1831-1836
Darwin went on an
around-the-world trip
on the HMS Beagle
and traveled to the
Galapagos Islands.
H.M.S Beagle Route
What did
Darwin’s
Travels reveal?
• The diversity of living
species was far greater
than anyone had
previously known!
• Species of different origins
had similar structures
• These observations led him
to develop the theory of
evolution!!