species concept
This species concept defines a species based on the ability to interbreed and produce fertile offspring.
What is the Biological Species Concept?
Evolution that occurs on a large scale over long periods of time.
Macroevolution
Individuals with favorable traits are more likely to do this.
survive and reproduce
Selection that favors average traits
stabilizing selection
A random change in allele frequencies.
Genetic Drift
This concept groups species based on physical traits and appearance.
Morphological Species Concept
When unrelated species evolve similar traits due to similar environments
Convergent Evolution
Differences among individuals in a population are called this
Variation
Selection that favors one extreme trait.
directional selection
Movement of genes between populations
gene flow
This concept focuses on evolutionary history and common ancestry.
Phylogenetic concept
When species evolve different traits from a common ancestor.
Divergent Evolution
Traits that can be passed down from parents to offspring are this
Heritable
When species evolve different traits from a common ancestor
Divergent Evolution
A sudden change in DNA
a Mutation
Two species that look alike but cannot reproduce are considered this.
separate species
A pattern where species remain stable for long periods, then change rapidly
punctuated Equilibrium
When more offspring are produced than can survive, it leads to this
Competition
This type of selection can lead to two distinct phenotypes
disruptive selection
When a small group starts a new population
Founder Effect?
This type of barrier prevents mating due to differencs in mating seasons
temporal isolation
The process where one species splits into two or more species
speciation
The phrase often used to describe natural selection
Survival of the Fittest
This mode often occurs when environments change
Directional Selection
Loss of genetic variation after a disaster
Bottleneck Effect