Ch 2

Question 1

Birds without ______ are selected for on _______ because there are few predators and it saves _______

Answer 1

Birds without wings are selected for on islands because there are few predators, and it saves energy

Question 2

Changes that happen over time within one species and doesn’t change the number of species

Answer 2

microevolution

Question 3

_____evolution is defined as a change in a population that results in ________ number of species

Answer 3

Macro, more than one

Question 4

Viable means that a creature can be ______ and _______

Answer 4

If a creature can be born and survive, it is _______

Question 5

Fertile means that a creature can _________

Answer 5

To be able to produce offspring is defined as being _______

Question 6

Fertile means that a creature can _________

Answer 6

To be able to produce offspring is defined as being _______

Question 7

To be able to produce offspring is defined as being _______

Answer 7

Fertile means that a creature can _________

Question 8

Animals are considered different species when ______

Answer 8

They cannot breed and produce viable and fertile offspring

Question 8

Animals are considered different species when ______

Answer 8

They cannot breed and produce viable and fertile offspring

Question 9

Prezygotic barriers are barriers that______

Answer 9

Inhibit species from even mating with each other

Question 9

Prezygotic barriers are barriers that______

Answer 9

Inhibit species from even mating with each other

Question 10

Postzygotic barriers are barriers that _______

Answer 10

Inhibit the zygote from being viable or fertile

Question 11

How many prezygotic barriers are there?

Answer 11

5

Question 12

What are the five prezygotic barriers?

Answer 12

Habitat, temporal, mechanical, behavioral, sexual

Question 13

What are the five prezygotic barriers?

Answer 13

Habitat, temporal, mechanical, behavioral,

Question 14

Species don’t live in same environment

Answer 14

Habitat isolation

Question 15

Species don’t live in same environment

Answer 15

Habitat isolation

Question 16

Species don’t mate at same time of day or year

Answer 16

Temporal isolation

Question 17

Species don’t share same behaviors in order to mate

Answer 17

Behavioral isolation

Question 18

Species don’t share same behaviors in order to mate

Answer 18

Behavioral isolation

Question 19

Genitalia of species can not line up

Answer 19

Mechanical isolation

Question 20

Special gamete proteins inhibit fertilization from taking place

Answer 20

Gametic isolation

Question 21

A fertilization event takes place, but the offspring dies quickly. This is defined as reduced _________ _______

Answer 21

Reduced hybrid viability

Question 22

A fertilization event takes place, but the offspring can’t reproduce. This is defined as reduced _________ _______

Answer 22

Reduced hybrid fertility

Question 23

When offspring are viable and fertile but their off spring arent

Answer 23

Hybrid breakdown

Question 24

When offspring are viable and fertile but their off spring arent

Answer 24

Hybrid breakdown

Question 25

When species evolve into two species due to geographic separation

Answer 25

Allopatric speciation

Question 26

Speciation happens in the same area, but offspring can’t breed with parents

Answer 26

Sympatric

Question 27

Gene flow is interrupted or reduced in ______ speciation

Answer 27

Allopatric

Question 28

In a highly subdivided area, what type of speciation would occur more frequently?

Answer 28

Allopatric

Question 29

Can hybridization lead to a new species?

Answer 29

Yes

Question 30

Most novel biological structures evolved in many stages from _________ structures

Answer 30

Previously existing structures