7. (10 pts) Main principles behind natural selection…
Principle Notes Examples
Populations evolve,
individuals do not.
Populations are groups of
individuals belonging to the
Same species and living
in the same area
Artificial Selection
When Darwin got back from the voyage, he continued his studies. He looked at changes produced by plant/animal __
____. Breeders know that the _______ of individuals within a species _____. The breeders could _______ the species
over many ________ by selecting the individuals with the desired traits to mate together. This is called: __ _____. (If
changes can occur through artificial selection, then it would make sense that the same thing could happen naturally as
well).
Give an example of a crop that is bred through artificial selection:
5.02 Evolutionary Relationships
a _________________ is the
smallest group that can evolve.
Inherited Variation individuals within a population
have natural ________________
that can be inherited (they are
genetic)
Overproduction of
offspring
ability to produce more
_____________________ than can
survive
Adaptations help
individuals compete
successfully for survival
and therefore beneficial
adaptations will become
more common in a
population.
since more individuals are
produced than can survive, they
must ___________________ for
food, space, etc.
"survival of the fittest."- Survival,
in evolutionary terms, means living
long enough to successfully
___________.
Any inherited trait that increases an
organism’s ability to survive is
called an _________________.
3 types of adaptations:
Over many generations, more
beneficial traits will become more
_______________ since the
organisms with those traits are
better able to survive and
_________________.
Species can evolve into
new species over many
generations of successful
adaptations.
New species can eventually emerge
with all of these new adaptations
over generations
-all living species descended with
___________________ from common
ancestors over a very long period of
time