Evolution 2

Question 1

What is a species?

Answer 1

members interbreed
shared gene pool
reproductive isolated from other species
produce fertile offspring

Question 2

Adaptions?

Answer 2

-anything that helps you to survive and reproduce

Question 3

Biogeography?

Answer 3

islands with similar hapitats don’t always have the same species

Question 4

Fossil Record? Transitional Form

Answer 4

ancient whales had hond limbs but were aquatic

Question 5

comparative anatomy?

Answer 5

-similarity in form suggests a common ancestry
-environment acts on the organism to make different structure

Question 6

Homologous?

Answer 6

same structure, different functions

Question 7

Analogous

Answer 7

same functions, different structure

Question 8

What acts on an organism to make a different structure?

Answer 8

Environment and mutations; NOT COMMON ANCESTRY

Question 9

Sexual selection?

Answer 9

differential reproduction, as a result of variation in the ability to obtain mates

Question 10

Sexual dimorphism?

Answer 10

males and females of the same species have a different environment

Question 11

Convergent evolution?

Answer 11

very different organisms evolving in the same environment; Creates analogous traits

Question 12

Coevolution?

Answer 12

2 organisms evolve together

Question 13

Weakness’s of Darwins theory?

Answer 13

-couldnt describe how variation occured, but knew it happened
- couldn’t explain meiosis, mutations, etc.
-because DNA hadn’t been discovered yet