Evolution

Question 0

Evidence of Evolution

Answer 0

• the fossil record of changes in plants and animals over millions of years.
• chemical and anatomical similarities of related life forms.
• genetics (DNA) shows how organisms have evolved and relate on a genetic level.

Question 1

Evolution:

Answer 1

Change of a population of organisms from one generation to the next.

Question 2

The four parts to Darwin’s theory…

Answer 2

1) organisms have changed over time.
2) organisms share a common ancestor.
3) change is a slow process.
4) the mechanism of evolutionary change is natural selection.

Question 3

Earth is ____ years old…

Answer 3

Earth is 4.6 billion years old. (Life was 3.85 billion)

Question 4

Natural selection:

Answer 4

Organisms best suited to their environment reproduces more often than others and pass their adaptation to their offspring.

Question 5

The mechanism for evolution is natural selection.

Answer 5

#1 without checks like predators populations would increase exponentially. (OTSS)
#2 most populations are stable in size except for seasonal changes.
#3 natural resources are limited.
#4 no two individuals are alike.
#5 variation is inheritable.

Question 6

Adaptive Radiation:

Answer 6

Small changes in organisms cause of their environment.

Question 7

Variation+many offspring+heredity=

Answer 7

Natural selection

Question 8

Divergent Evolution:

Answer 8

When a group from a specific population develops into a new species.

Question 9

Convergent Evolution:

Answer 9

Similar evolved structures in unrelated animals.

Question 10

Coevolution:

Answer 10

The evolution of two or more species, each adapting to changes in the other.

Question 11

The four different mutualism:

Answer 11

• tropic mutualism: both help feed each other.
• cleaning symbiosis: one gets food and shelter, the other has parasites removed.
• defensive mutualism: one protects the other and other gets benefits for helping.
• dispersive mutualism: one receives food in exchange for moving pollen.