Evolution 1
Evolution 2
Evolution 3
Evolution 4
Evolution 5
100
A change in the DNA sequence
What is a mutation?
100
How well an organism is able to survive and reproduce in its environment
What is fitness?
100
This person wrote On the Origin of Species after a long voyage to the Galapagos Islands
Who is Charles Darwin?
100
Preserved remains of ancient organisms
What are fossils?
100
The concept that organisms that are best suited to their environment will survive and reproduce
What is natural selection?
200
A heritable trait that helps an organism better survive and reproduce in their environment
What is an adaptation?
200
When humans breed organisms for specific features
What is artificial selection?
200
An organism's adaptation to blend into an environment and stay undetected
What is camouflage?
200
When an entire species dies out completely
What is extinction?
200
This is small scale adaptations, occurring in a population over a short period of time.
What is microevolution?
300
The whale's pelvic bones
What is vestigial structure?
300
Has similar functions but different structures and do not share a common ancestor 
What are analogous structures?
300
An organism's unique sequence of DNA, usually a combination of two alleles.
What is genotype?
300
The expression of an organism's genes (observable characteristics)
What is phenotype?
300
Has similar bone structures and a common ancestor
What are homologous structures?
400
A decline in genetic variation when a small group becomes separated from a larger population
What is the founder effect?
400
When a population experiences long periods of stability, followed by short periods of rapid evolutionary change
What is Punctuated Equilibrium?
400
A slow decline in a species's genetic variation due to outside forces or random events, leading to the species disappearance
What is the gradual extinction?
400
A change in population distribution of a species where one extreme trait is favored over the average
What is directional selection.
400
When adaptations of one species cause similar adaptations in another species, often found in species with symbiotic relationships, or parasites
What is coevolution?
500
The evolutionary diversification of a single ancestral line where organisms display different adaptations in response to different selection pressures
What is adaptive radiation?
500
This evidence for evolution is characterized by fetal stages of different species looking very similar during parts of their development.
What is embryology?
500
Structures that were used by a species' ancestors, but no longer serves any purpose
What is a vestigial structure/organ?
500
The process where organisms that are not closely related develop similar traits as adaptations to similar environments
What is convergent evolution?
500
Organisms moving from a population of one species to a separate population of the same species, changing the allele frequency or introducing new traits
What is gene flow