Download Evolution

Evolution
Gaiser Life Science
Know
What do you know about evolution?
“I don’t know anything.” is not an acceptable answer.
Use complete sentences.
Evidence
After listening to the PowerPoint lecture, come back here
and list evidence to explain why your answer to the above
question is or is not a good answer. You may also use other
outside sources to help you respond.
Choose any vocabulary word except competition and make
a drawing that represents the definition of the word you
chose.
Page #
Clarifying ?s
Who?
species
adaptations
evolution
Evolution
Information
Charles Darwin was a naturalist (a person who studies nature) who
traveled for 5 years on the HMS Beagle (a British ship). He made and
recorded thousands of observations of plants and animals. His best
known research was done in the Galapagos Islands.
- a group of similar organisms that can mate with each other and
produce fertile offspring
Darwin took note of similarities and differences between mainland
and island birds and animals.
- characteristics that help organisms survive and reproduce
Example: the shapes of birds’ beaks
- a gradual change in a species over time in order to adapt to
new conditions in the environment
natural selection
- individuals who better adapt to their environment have a better chance
to survive and reproduce
FYI - The phrase “Survival of the fittest” was introduced by
Herbert Spencer, a contemporary of Charles Darwin. The
phrase essentially means the same as “natural selection.”
overproduction
- when a species produce more offspring than the environment can
support
Page #
Clarifying ?s
competition
variation
selection
New species
Summary:
Evolution
Information
- food and resources are limited. Species compete with each
other to survive.
Example: A musk ox's diet consists of plants such as
sedges and grasses, while a caribou's is made of berries,
grass and sedge. When food is hard to find in the tundra,
musk ox and caribou might have some competition trying to
get something to eat. (from answers.com)
- any difference between individuals of the same species
Example: coloring
- Species with traits that promote survival live and reproduce. Over time,
traits that do not promote survival are not carried to the next generation.
When a group separates from a species over several generations,
different traits evolve.
Example: Grand Canyon Squirrels - The kaibab
squirrels and the albert squirrels were separated by
the natural barrier (the Grand Canyon) They started out
as the same species but, eventually developed into
two separate species of squirrels.
Page #
Clarifying ?s
Who?
species
adaptations
evolution
Evolution
Information
Charles Darwin was a naturalist (a person who studies nature) who
traveled for 5 years on the HMS Beagle (a British ship). He made and
recorded thousands of observations of plants and animals. His best
known research was done in the Galapagos Islands.
- a group of similar organisms that can mate with each other and
produce fertile offspring
Darwin took note of similarities and differences between mainland
and island birds and animals.
- characteristics that help organisms survive and reproduce
Example: the shapes of birds’ beaks
- a gradual change in a species over time in order to adapt to
new conditions in the environment
natural selection
- individuals who better adapt to their environment have a better chance
to survive and reproduce
FYI - The phrase “Survival of the fittest” was introduced by
Herbert Spencer, a contemporary of Charles Darwin. The
phrase essentially means the same as “natural selection.”
overproduction
- when a species produce more offspring than the environment can
support
Page #
Clarifying ?s
Evolution
Information
competition
- food and resources are limited. Species compete with each
other to survive.
Example: A musk ox's diet consists of plants such as
sedges and grasses, while a caribou's is made of berries,
grass and sedge. When food is hard to find in the tundra,
musk ox and caribou might have some competition trying to
get something to eat. (from answers.com)
variation
- any difference between individuals of the same species
Example: coloring
- Species with traits that promote survival live and reproduce. Over time,
traits that do not promote survival are not carried to the next generation.
When a group separates from a species over several generations,
different traits evolve.
Example: Grand Canyon Squirrels - The kaibab
squirrels and the albert squirrels were separated by
the natural barrier (the Grand Canyon) They started out
as the same species but, eventually developed into
two separate species of squirrels.
selection
New species
Summary:
Page #
This PowerPoint was created by Tim Paterek from Charlene Shea’s lecture
notes. All pictures came from Google Image Search. To fall within the Fair
Use Guidelines, this PowerPoint must be used within the confines of the
classroom and may not be published back onto the Internet unless the
pictures are removed.