Test 3 - Topic 13-14 Flashcards
(103 cards)
_________ : group of interbreeding natural populations that are reproductively isolated from other natural populations
species
_________ - A specific evolutionary pattern where there is a rapid increase in the number of closely related species
Adaptive Radiation
Adaptive Radiation - A specific evolutionary pattern where there is a rapid _________ in the number of closely related _________
- increase
- species
_________ - An evolutionary pattern where very different organisms show similar characteristics
Convergent Evolution
Convergent Evolution - An evolutionary pattern where very different _________ show similar _________
- organisms
- characteristics
_________ - An evolutionary pattern where individual events cause many branches in the evolution of a group of organisms
Divergent Evolution
Divergent Evolution - An evolutionary pattern where _________ events cause many branches in the evolution of a group of _________
- individual
- organisms
_________ : is the process by which local units of a population become reproductively isolated from other units and thus experience changes in gene frequencies
Genetic divergence
Genetic divergence is the process by which local units of a _________ become reproductively isolated from other units and thus experience changes in _________ frequencies
- population
- gene
_________ - reinforce genetic divergence by stopping gene flow (cant move from flint to lansing - something is blocking them)
Isolating mechanisms
Isolating mechanisms - reinforce _________ divergence by _________ gene flow (cant move from flint to lansing - something is blocking them)
- genetic
- stopping
_________ Isolation - Isolation mechanisms that take place before the zygote is formed
Pre-zygotic
_________ Isolation - They have different times of reproduction
Temporal
_________ Isolation - Refers to the different patterns of courtship
Behavioral
_________ Isolation - Reproductive organs prevent successful breeding (chiwawa and great dane)
Mechanical
_________ Isolation - Egg and sperm can not fuse together
Gametic
_________ Isolation - A physical barrier prevents mating
Geographical
_________ Isolation - Takes place after the zygote is formed
Postzygotic
A _________ is produced -
- One hybrid is weak sickly, and dies shortly after birth
- One hybrid is strong and healthy but sterile
hybrid
A hybrid is produced -
- One hybrid is _________ sickly, and dies shortly after birth
- One hybrid is _________ and healthy but sterile
- weak
- strong
_________ Speciation - Takes place in the absence of gene flow
(the isolating mechanism is Geographical)
(Allopatric = Different homeland) (physical barrier)
Allopatric
Allopatric Speciation - Takes place in the absence of gene flow
(the isolating mechanism is _________ )
(Allopatric = Different _________ ) (physical barrier)
- Geographical
- homeland
_________ Speciation - New species arise, sometimes rapidly from a small proportion of individuals within the existing population (Sympatric = Same homeland)
Sympatric
Sympatric Speciation - New species arise, sometimes rapidly from a small proportion of _________ within the existing population (Sympatric = Same _________ )
- individuals
- homeland