Charles Darwin
Published on Nov 18, 2015
Evolution
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PRESENTATION OUTLINE
Darwin's controbutions
Charles Darwin's controbutions changed the way we look at life today.
He showed us evolution and how the world and its species on it are constantly changing.
He also discovered the Galopogose islands.
He showed us evolution and how the world and its species on it are constantly changing.
He also discovered the Galopogose islands.
Photo by dbr Atl
What was he given credit for?
Charles Darwin was given
credit for his theory of
evolution by natural selection,
through the evidence of
fossil records that show a
resemblance to modern species.
credit for his theory of
evolution by natural selection,
through the evidence of
fossil records that show a
resemblance to modern species.
Photo by tmkeesey
Details of the voyage
The voyage took 5 years.
Charles Darwin planned to
collect specimens off plants
and animals, which is how he
came up with Evolution.
Charles Darwin planned to
collect specimens off plants
and animals, which is how he
came up with Evolution.
Photo by Karen E James
Observations from the voyage
- Species vary globally
- Species vary locally
- Species vary overtime
During the HMS Beagle Charles
Darwin made 3 observations.
Darwin made 3 observations.
Photo by Caro's Lines
Process of Natural Selection
Natural Selection is how a
species adopts to its new
environment by making
physical changes and how its
fitness is at its best in order to
stay alive in the survival of the
fittest.
species adopts to its new
environment by making
physical changes and how its
fitness is at its best in order to
stay alive in the survival of the
fittest.
Photo by Travis S.
Supporting Evidence of evolution
Fossil records- Ancient land mammal's fossil's have shown to have evolve into whales.
Common Ancestors- "Darwin Proposed that animals with similar structure evaded from a common ancestors with a basic version of that structure".
DNA structures- Shows on estimate in the time that two species have been evolving independently.
need one more
Common Ancestors- "Darwin Proposed that animals with similar structure evaded from a common ancestors with a basic version of that structure".
DNA structures- Shows on estimate in the time that two species have been evolving independently.
need one more
Photo by marcp_dmoz
environmental effects on species overtime
Species are greatly effected by their environment. The animals can sometimes easily adapt to their new environment. In some cases they may not be able to adapt and become extinct. This is because the process of natural selection can occur fast enough in order for the animals to adapt to their rapidly changing environment. So eventually they die out.
Photo by Keoni Cabral
The Different types of selection
Disruptive: This selection happens because individuals at the outer ends of the curves have higher fitness than the middle.
Stabilizing: This selection happens because when the center of the curve has higher fitness than the other ends.
Directional: This type of selection happens because the inner curve has a higher fitness than the center and outer curve.
Stabilizing: This selection happens because when the center of the curve has higher fitness than the other ends.
Directional: This type of selection happens because the inner curve has a higher fitness than the center and outer curve.
Scientists who also contributed
Lyell: Showed how environmental changes changes different species.
Hutton: Introduced mechanism to science and inspired Darwin to look at mechanism of Natural selection.
Malthus: Economist that basically showed that only the ones who could adapt to environmental changes would survive.
Lamark: Zoologist who said that humans come from a lower level of species, which inspired Darwin's theory of Natural Selection
Hutton: Introduced mechanism to science and inspired Darwin to look at mechanism of Natural selection.
Malthus: Economist that basically showed that only the ones who could adapt to environmental changes would survive.
Lamark: Zoologist who said that humans come from a lower level of species, which inspired Darwin's theory of Natural Selection
Photo by RDECOM
