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