Chapter 13

Question 1

_ _ divides the Earth’s _ into _ defined by _ _ such as _ _

Answer 1

Geologic Timescale/history/ears/major events/mass extinction

Question 2

Evidence for relationships with evolution comes from _

Answer 2

paleontology

Question 3

Paleontology:

Answer 3

The study of life

Question 4

Paleontology compares _ and _ characteristics of species

Answer 4

anatomical/biochemical

Question 5

Fossils:

Answer 5

Remains of ancient organisms

Question 6

_ form in many ways

Answer 6

Fossils

Question 7

Fossils form by _ replacing _ gradually

Answer 7

minerals/tissues

Question 8

Fossils may consist of _ or _

Answer 8

footprints/feces

Question 9

Fossils rarely _ the whole _

Answer 9

preserve/organism

Question 10

_ record _ change

Answer 10

Fossils/evolutionary

Question 11

The _ _ is often incomplete

Answer 11

fossil record

Question 12

The _ of a _ can be estimated in _ ways

Answer 12

age/fossil/2

Question 13

The _ of a _ in the context of others provides a _ _

Answer 13

position/fossil/relative date

Question 14

_ _ uses a _ _ to estimate the _ _ when an _ lived

Answer 14

Radiometric Dating/radioactive isotope/absolute date/organism

Question 15

The _ of an _ - determines whether it is useful for _ or _ objects

Answer 15

length/isotopes half-life/ancient/recent

Question 16

Species _ reveal _ events

Answer 16

distributions/evolutionary

Question 17

_ provides insight into _- and _ scale _ events

Answer 17

Biogeography/large/small/evolutionary

Question 18

_ _ may reveal _ _

Answer 18

Anatomical Comparisons/common descent

Question 19

_ _ have a shared _ _

Answer 19

Homologous structures/evolutionary origin

Question 20

_ _ and _ have similarities that indicate they were _ from a _ _

Answer 20

Homologous structures/molecules/inherited/shared ancestor

Question 21

_ _ have lost their functions

Answer 21

Vestigial Structures

Question 22

_ _ have no _ in an organism, but are _ to _ structures in _ _

Answer 22

Vestigial Structures/function/homologous/functioning/related species

Question 23

_ _ produces _ _

Answer 23

Convergent evolution/superficial similarities

Question 24

In convergent evolution, _ _ are similar in _ but do not reflect _ _

Answer 24

analogous structures/function/shared ancestry

Question 25

_ _ can produce _ _

Answer 25

Convergent evolution/analogous structures

Question 26

_ _ _ combines the study of _ with the study of _ _

Answer 26

Evolutionary development biology/development/DNA sequences

Question 27

Many genes, including _ _, influence the _ of an organism's _ _

Answer 27

homeotic genes/development/body parts

Question 28

_ in _ _ may lead to new _

Answer 28

Mutations/homeotic genes/phenotypes

Question 29

_ reveal _

Answer 29

Molecules/relatedness

Question 30

Comparing _ and _ _ may reveal close relationships

Answer 30

DNA/protein sequences

Question 31

_ in _ _ are unlikely to occur by _; _ from a _ _ is more likely

Answer 31

Similarities/molecular sequences/chance/descent/shared ancestor

Question 32

_ _ comparisons provide an indication of the _ among _, as can the _ _ sequences of _

Answer 32

DNA sequence/relationships/species/amino acid/proteins

Question 33

_ clocks help assign dates to _ _

Answer 33

Molecular/evolutionary events

Question 34

_ _ compare _ _ to estimate the time when two species _ from a common _

Answer 34

Molecular Clocks/DNA sequences/diverged/ancestor