Home
Explore
Exams
Search for anything
Search for anything
Login
Get started
Home
Origins of Species and Macroevolution
Studied by 0 people
0.0
(0)
Add a rating
View linked note
Learn
A personalized and smart learning plan
Practice Test
Take a test on your terms and definitions
Spaced Repetition
Scientifically backed study method
Matching Game
How quick can you match all your cards?
Flashcards
Study terms and definitions
1 / 32
There's no tags or description
Looks like no one added any tags here yet for you.
33 Terms
View all (33)
Star these 33
1
Macroevolution
Occurs at or above the species level.
New cards
2
Speciation
The process of species formation.
New cards
3
Species
A group of organisms that maintains a distinctive set of attributes in nature.
New cards
4
Currently identified species on Earth
About 2 million species.
New cards
5
Estimated total species on Earth
Ranges from 5 to 50 million.
New cards
6
Subspecies
Groups of the same species with some differences, but not enough to be called separate species.
New cards
7
Ecotypes
Genetically distinct bacterial populations adapted to local environments.
New cards
8
Morphological Species Concept
Individuals of a species share measurable traits that distinguish them from other species.
New cards
9
Biological Species Concept
A species is a group of interbreeding individuals reproductively isolated from other such groups.
New cards
10
Prezygotic Isolating Mechanisms
Prevent breeding before zygote formation.
New cards
11
Postzygotic Isolating Mechanisms
Prevent the development of viable, fertile individuals after fertilization.
New cards
12
Allopatric Speciation
Occurs when some members of a species become geographically separated.
New cards
13
Sympatric Speciation
Occurs when members of a species within the same range diverge into two or more species.
New cards
14
Gradualism
Species evolve continuously over long time spans.
New cards
15
Punctuated Equilibrium
Species remain in equilibrium for long periods, with sporadic bursts of rapid changes.
New cards
16
Heterochrony
Evolutionary changes in the rate or timing of developmental events.
New cards
17
Adaptive Radiation
A single species evolves into a range of descendants that differ greatly in habitat, form, or behavior.
New cards
18
Hybrid Inviability
Species hybrids do not survive.
New cards
19
Hybrid Sterility
Species hybrids cannot produce functional gametes.
New cards
20
Hybrid Breakdown
Reduced fitness in the F2 generation (offspring of hybrid).
New cards
21
Reproductive Isolation
Prevents gene pools from mixing.
New cards
22
Ecological Isolation
Geographic barriers prevent contact.
New cards
23
Temporal Isolation
Species reproduce at different times of day or year.
New cards
24
Behavioral Isolation
Differences in mating signals or sexual selection.
New cards
25
Mechanical Isolation
Incompatible reproductive structures.
New cards
26
Gametic Isolation
Incompatible gametes prevent fertilization.
New cards
27
Sexual Selection
Mate choice influences reproductive isolation.
New cards
28
Panthera leo
Example of Linnaeus’ classification system (Panthera = Genus, Leo = Specific epithet).
New cards
29
Molecular Traits
DNA sequences used to identify similarities and differences in species.
New cards
30
Ecological Factors
Habitat-related factors that can distinguish species, especially in bacteria.
New cards
31
Evolutionary Relationships
Based on phylogenies derived from fossil records or DNA sequences.
New cards
32
Interspecies Hybrid
Offspring from two different species, usually with reduced fitness.
New cards
33
Species Cluster
A group of closely related species.
New cards
Explore top notes
The Cold War
Note
Studied by 6 people
282 days ago
4.0
(1)
Preview
learning and motivation unit three (week 11)
Note
Studied by 4 people
912 days ago
5.0
(1)
Preview
đź’
Unit 2: Poetry I
Note
Studied by 1071 people
709 days ago
4.8
(4)
Preview
Free to Choose - 1. Power of the Market
Note
Studied by 34 people
60 days ago
5.0
(1)
Preview
🎼
Instruments and Ensembles
Note
Studied by 7 people
969 days ago
5.0
(1)
Preview
Unit One AP Government: Foundations of American Democracy
Note
Studied by 26 people
920 days ago
5.0
(1)
Preview
Science - Chapter 9
Note
Studied by 3 people
678 days ago
5.0
(1)
Preview
Weltwirtschaftskrise
Note
Studied by 12 people
852 days ago
5.0
(1)
Preview
Explore top flashcards
Vocab 1
Flashcard (25)
Studied by 9 people
636 days ago
5.0
(1)
Preview
Biology Chapter 7: DNA Structure and Gene Function
Flashcard (43)
Studied by 4 people
385 days ago
4.0
(1)
Preview
AP Lit Vocab 2
Flashcard (20)
Studied by 1 person
158 days ago
5.0
(1)
Preview
Honors Biology DNA Replication
Flashcard (32)
Studied by 5 people
489 days ago
5.0
(1)
Preview
Chapter 26 : The Seed Plants: Gymnosperms & Angiosperms
Flashcard (30)
Studied by 3 people
129 days ago
5.0
(1)
Preview
Inflammation
Flashcard (21)
Studied by 12 people
779 days ago
5.0
(1)
Preview
AP Bio - Unit 3
Flashcard (41)
Studied by 198 people
832 days ago
5.0
(1)
Preview
Period 7A Knowt (1898-1930) - Mr. Paeth APUSH
Flashcard (86)
Studied by 811 people
371 days ago
4.4
(10)
Preview