Chapter 25

Front 1

The process of evolutionary changes that result in formation of a new species and groups is called...

Back 1

MacroEvolution

Front 2

What are the traits common used to identify species?

Back 2

Morphological traits, ability to interbreed, molecular similarity(DNA), ecological factors, evolutionary relationship.

Front 3

species are identified based on unique combinations of physical or molecular characteristics under the...

Back 3

Phylogenetic species concept

Front 4

A group of individuals that can interbreed in nature and produce viable offspring would be considered to be a species according to the...

Back 4

Biological species concept

Front 5

Dandalions are plants that produce fruitlike propagudes that are actually produced asexually. Sexual reproduction is very rare in this organism Which species concept would be the LEAST useful in defining dandelions as a species?

Back 5

Biological species concept

Front 6

THe pace of evolution may change due to sudden environmental shifts such as climate change. This may result in rapid evolution. (true/false)

Back 6

true. Evolution has no constant speed.

Front 7

American sycamore and European Sycamore are tree species that will interbreed if planted nearby but will not normally interbreed because they occur on different continents. This is an example of...

Back 7

Habitat isolation

Front 8

During the spring time in main, male moose often enter a cow pasture and begin calling the female cows. The moose may even try to mount the female, but the male genitalia do not fit properly. This is an example of...

Back 8

mechanical isolation

Front 9

Two species of salamander have similar ranges, but one breeds from January toMarch, while the second one breeds from March to May. This is an example of

Back 9

temporal isolation

Front 10

A frog and a toad mate. The frog drops its sperm onto the toad’s eggs as theyare being laid, no offspring develop because the sperm cannot fertilize egg. This is anexample of

Back 10

Gametic Isolation

Front 11

Frog croak at night to allure females for mating. Females are attracted only tothe croaks of their own species. this is an example of

Back 11

Behavioral isolation

Front 12

A liger is a result from a male lion and a female tiger. Male ligers are usuallysterille. This is an example of

Back 12

Hybrid Sterility

Front 13

3.5 million years ago the Isthmus of Panama formed. This new landmassseveed the connection btw the pacific ocean and the caribbean sea. An ancestralfish pop. was split in two by this event..the two pop. no longer interbreed and aretwo diffeent species. This type of speciation is

Back 13

allopatric speciation

Front 14

Storm blows a small group of birds off course and they land on an island toofar from the mainland for them to fly back on course. The birds remain on the islandfor 100 generations when a second storm blows more birds from the mainland tothe island. The new birds cannot mate with the est. birds. What has occured

Back 14

Geographical isolation resulting in reproductive isolation

Front 15

Allopatric speciation occurs because a population...

Back 15

becomes geographically isolation and undergoes genetic change

Front 16

Species evolve continuously over long spans of time according to the conceptof

Back 16

gradualism

Front 17

Morphological traits are...

Back 17

physical traits

Front 18

Reproductive isolation is...

Back 18

inability to breed

Front 19

molecular features are...

Back 19

DNA differences between organisms

Front 20

Ecological factors are..

Back 20

Different habitats

Front 21

Evolutionary Relationships are..

Back 21

fossil records and DNA analysis

Front 22

Biological Species Concept...

Back 22

group of individuals capable of interbreeding

Front 23

Evolutionary Lineage Concept...

Back 23

species defined based on the separate evolutionary lineage

Front 24

General Lineage Concept..

Back 24

Each species forms a group with a particular set of characteristics

Front 25

Ecological Species Concept...

Back 25

each species occupies an ecological niche. (unique habitat)

Front 26

Habitat Isolation

Back 26

what it sounds like

Front 27

Temporal Isolation

Back 27

reproduce at different times of the year

Front 28

behavioral isolation

Back 28

different mating songs

Front 29

mechanical isolation

Back 29

can't because body types different

Front 30

gametic isolation

Back 30

gametes fail to unite

Front 31

Hybrid Sterility

Back 31

makes a new animal but it is sterile

Front 32

Hybrid Inavibility

Back 32

they can have sex, but no offspring is produced

Front 33

Hybrid Breakdown

Back 33

Offspring is made, but it has genetic abnormalities

Front 34

What is speciation?

Back 34

formation of a new species

Front 35

Cladogensis?

Back 35

Division of a species into 2 or more.

Front 36

Anagenesis?

Back 36

Single species transformed into another

Front 37

Adaptive radiation?

Back 37

one species evolves into multiple other species differing greatly on habitat or behavior

Front 38

Sympatric Speciation?

Back 38

Specialization without geographical isolation

Front 39

Gradualism

Back 39

changes over a long period of time

Front 40

Punctuated equilibrium?

Back 40

species remains relatively unchanged for many generations, but has short rapid bursts of change.