Speciation Flashcards
The type of reproductive isolation in which a physical barrier separates two populations
Allopatric speciation
Term that describes the point where two groups in a population separate into different species during speciation
Adaptive radiation
The term that means that organisms tend to try to meet with organisms that have similar traits to themselves
Assortive mating
The type of reproductive isolation in which an organism’s courtship activities cause populations to separate ex. dance and songs
Reproductive isolation: behavioral
The group of individuals that can interbreed and produce fertile offspring Bret typically cannot breed with members of another species
Biological species concept
The occurrence when a population size is reduced for at least one generation, it can reduce genetic variation greatly.
Bottleneck effect
X
Convergence
Occurs when natural selection for similar environmental factors causes unrelated organisms to resemble each other
Convergent evolution
The term that means that a new species is created when enough gene flow occurs
Divergence
The establishment of a new population far from the original population may lead to the evolution of several new species
Founders effect
The type of reproductive isolation and which sperm and egg are not able to combine
Reproductive isolation: gametic incompatibility
The total genetic content of a population of organisms in an area
Gene pool
Identifies as separate species populations with a unique lineage
Genealogical species concept
Changes that occur in allele frequency due to chance
Genetic drift
The type of reproductive isolation in which populations are separated because breeding occurs at different times of the year
Reproductive isolation: geological
States that it will be a freaking seats will remain stable and populations that are large in size random mating and experiencing no migration or natural selection
Hardy Weinberg principle
X
Hybrid sterility
X
Hybrid inviability
D
Mass extinction
Species consist of organisms that share a set of unique physical characteristics that is not found in other groups of organisms
Mechanical reproductive isolation
Relies on different characteristics among species
Morphology species concept
The mode of speciation in which new organisms are formed on the outskirts of an environment and new niches are formed
Parapatric speciation
The condition in which a mistake occurs during meiosis and doubles the number of chromosomes
Polyploidyism
The term for periods of stability that are followed by quick bursts of changes in populations
Punctuated equilibrium
The mode of speciation in which two species day bridge from with in the same ecosystem
Reproductive isolation
The lack of gene flow that causes two distinct populations from one ancestral form
Speciation
The name for organisms that can interbreed and create fertile offspring
Species
The pattern of speciation that occurs very quickly because many variations are created when they move to new niche is it to avoid competition
Sympatric speciation
The mode of speciation in which a physical barrier causes divergence that can also be called geographic
Temporal
P plus Q equals one
Allele frequency
Spatial behavioral mechanical Temporel gamete incompatibility
Pre-zygotic reproductive isolation
Hybrid invisibility and Hybrid sterility
Post zygotic reproductive isolation
No mutation
population is large
mating is random
no immigration or immigration genotype is suited for survival
Genetic equilibrium
Opposite of genetic equilibrium
Microevolution
P squared plus 2PQ plus Q squared equals one
Genotype frequencie
