Download Evolution Bootcamp PowerPoint

“The process by which organisms change
over time from simple, single-celled:
complex-single-celled: complex, multicellular
to complex organisms.”
Natural Selection

Nature selects those individuals who are best fit for the
environment.
Overproduction

More offspring are produced than can survive.
Ōkunoshima (大久野島?) is a small
island located in the Inland Sea of
Japan in the city of Takehara,
Hiroshima Prefecture. It is accessible
by ferry from Tadanoumi and
Ōmishima. There are campsites,
walking trails and places of historical
interest on the island. It is often
called Usagi Jima or "Rabbit Island"
because of the numerous feral
rabbits that roam the island; they are
rather tame and will approach
humans.
Competition

The fight for limited resources.
Giraffes had to adapt
to the reduction in the
amount of leaves
available by evolving
to survive. The ones
who couldn’t adapt
died of starvation.
Variation

Differences among organisms in a species (sexually
reproducing organisms have more variation than
asexually reproducing organisms)
Adaptive Value

Any trait that helps an organism survive and reproduce
under a given set of environmental conditions.
Wing types of
different animals and
the evolution of
Finches by differences
in beak types
Extinction

The disappearance of an entire species caused by a
failure to adapt to a changing environment. Extinction
occurs when the Environment changes and the Species
cannot adapt.
The Dodo
The Tasmanian
Tiger/Wolf
Ancestry

Cladograms or
family tree.
Beaks of Finches

What you did: Played finches with different beak characteristics competing for
food.
What you learned:
 Different environmental conditions (food) favored different species of finch
(beaks), allowing some to survive and reproduce, but not others. (Survival of
the fittest)
 Natural selection, competition and variation drive evolution. (Species change
over time)