macroevolution 9/30 - 10/4

studied byStudied by 2 people
0.0(0)
Get a hint
Hint

fossil record

1 / 25

flashcard set

Earn XP

26 Terms

1

fossil record

using fossils and their structure to determine the evolution of an organism

New cards
2

biogeography

the geographic distribution of organisms on earth follows patterns that can be explained by evolution

New cards
3

relative dating

the method used to determine the approximate age of a structure based on is physical relationship to surrounding geologic structures

New cards
4

absolute dating

exact age is determined by measuring the physical properties of the object itself (ex. carbon dating)

New cards
5

embryology

  • compares and contrasts embryos of different species

  • embryos of different species can have similarities that are not visible when organisms are fully formed

New cards
6

molecular evolution

DNA, RNA, and amino acids show evolution through differences in their sequences

New cards
7

homologous structures

similar physical traits that come from a common ancestor that are used for different purposes

New cards
8

analogous structures

features in organisms that are similar in unrelated species, caused by similar selection pressures

New cards
9

vestigial structures

traits inherited that are no longer needed/don’t benefit the organism anymore

New cards
10

divergent evolution

two species originate from a common ancestor (contain homologous structures and molecular homology)

New cards
11

convergent evolution

two unrelated species evolve similar traits (contain analogous structures)

New cards
12

parallel evolution

two species evolve similar traits independently (live in different environments)

New cards
13

coevolution

evolution of one species due to the evolution of another

New cards
14

gradual evolution

evolution that occurs by the gradual accumulation of small changes

New cards
15

transitional species

species that exist from one species becoming another

New cards
16

punctuated equilibrium

species diverge in spurts of relatively rapid change

New cards
17

phylogeny

the evolutionary history of a species or a group of related species

New cards
18

systematics

  • a discipline focused on classifying organisms and determining their evolutionary relationship

  • studied through fossils, molecules, and genes

New cards
19

cladistic analysis

shared characteristics depicted in a diagram

New cards
20

phylogenetic tree

depicts evolutionary relationship and reflects taxonomic hierarchy over time

New cards
21

monophyletic taxon

includes all descendants and the common ancestor

New cards
22

polyphyletic taxon

does not have the common ancestor of the organisms

New cards
23

paraphyletic taxon

a common ancestor and some of the descendants are included, but not all

New cards
24

origin of life

  • 3.5 to 4 billion years ago

  • life started with single cell bacteria

New cards
25

abiotic synthesis of organic monomers

New cards
26

miller & urey experiment

  • stimulated the chemical environment of primitive earth

  • produced a variety of molecules associated with life

New cards

Explore top notes

note Note
studied byStudied by 24 people
... ago
5.0(1)
note Note
studied byStudied by 15 people
... ago
5.0(1)
note Note
studied byStudied by 34 people
... ago
5.0(1)
note Note
studied byStudied by 3 people
... ago
5.0(1)
note Note
studied byStudied by 13 people
... ago
5.0(2)
note Note
studied byStudied by 20 people
... ago
5.0(1)
note Note
studied byStudied by 30 people
... ago
4.0(1)

Explore top flashcards

flashcards Flashcard (52)
studied byStudied by 11 people
... ago
5.0(1)
flashcards Flashcard (55)
studied byStudied by 2 people
... ago
5.0(1)
flashcards Flashcard (73)
studied byStudied by 2 people
... ago
4.0(1)
flashcards Flashcard (21)
studied byStudied by 9 people
... ago
5.0(1)
flashcards Flashcard (46)
studied byStudied by 9 people
... ago
5.0(1)
flashcards Flashcard (29)
studied byStudied by 1 person
... ago
5.0(1)
flashcards Flashcard (33)
studied byStudied by 7 people
... ago
5.0(2)
flashcards Flashcard (104)
studied byStudied by 2 people
... ago
5.0(1)
robot