Evidence
Natural Selection
More Natural Selection
Species
Population Genetics
100
Preserved remains of living organisms
What is a fossil?
100
Define Natural selection
individuals with one form of a trait have increased fitness (live longer and reproduce more) so this trait becomes more common in the population
100
What is Stabilizing Structure?
When natural selection favors one extreme trait.
100
Define species
A group of organisms that can reproduce and produce vital and fertile offspring.
100
What is Genetic Drift?
Random change in allele frequencies that occurs in small population.
200
The definition of a transitional fossil
A fossil that links two distinct groups.
200
Which phenotype will be selected for on the dark background example?
the dark moth
200
What type of selection is show below?
Directional Selection
200
What is Speciation?
The formation of new and distinct species in the course evolution.
200
What is Gene Flow?
Movement of alleles from one population to another.
300
Two examples of evidence used to support the theory of evolution
DNA/Proteins
Comparative Anatomy: Homologous/Vestigial
Embryogy
Biogeography
Direct Observation
300
What is a Vestigal Structure?
A structure that is present in an organism but no longer serves its original purpose (ex; wisdom teeth, human tailbones)
300
What is Divergent Evolution?
When two or more species share a common ancestor become more different overtime.
300
Which organism is the closest relative to the house cat?
Leopard
300
What is a gene pool?
Combined genetic information of all the members of a particular population
400
Evolution defined
What is change in a species over time
400
What is Directional Selection?
When natural selection favors one of the extreme variations of a trait.
400
What type of selection is shown below:
Disruptive selection
400
Is the horse carnivorous?
No
400
What is sexual selection?
A type of selection for traits that enhance mating
500
The name of the structures shown
Homologous structures
500
What is Disruptive Selection?
When natural selection favors both extremes of phenotype range.
500
What is Adaption?
A trait that helps an organism survive and reproduce.
500
Which organism has more DNA in common with the wolf? The cat or the tortoise
CAT
500
What are 2 things that can cause reproductive isolation in a population?
Geographical isolation
Behavior isolation
Temporal isolation
specific examples are okay