New Pair of Genes
Selection for this Category
Evodence
Speciate this
Evolution of a Theory
100
The name for different versions of the same gene.
What is an allele?
100
A beneficial trait that improves reproductive success.
What is an adaptation?
100
These preserved remains of ancient organisms provided some of the first evdience for evolution.
What are fossils?
100
This species concept defines a species as a group of organisms that can interbreed in nature to produce viable, fertile offspring.
What is the biological species concept?
100
Evolution acts on this level of biological organization.
What is a population?
200
This agent of evolutionary change refers to when individuals move between populations exchanging genes.
What is gene flow?
200
The level of biological organization that natural selection acts upon.
What is the individual/organism?
200
Darwin studied tortoises and mockingbirds on these islands.
What are the Galapagos Islands?
200
The type of speciation that involves geographic isolation.
What is allopatric speciation?
200
This English naturalist and collector arrived at the theory of natural selection independently of Charles Darwin.
Who was Wallace?
300
This form of evolution driven by random chance is strongest in small popualtions.
What is genetic drift?
300
The name for a type of selection where humans select traits they want to change in a population.
What is artificial selection?
300
These traits that once functioned in ancestors have lost their function in descendent species.
What are vestigial traits.
300
The type of reproductive isolation that occurs before fertilization.
What is prezygotic isolation?
300
This change in a nucleotide sequence provides the raw material for evolution to occur.
What is a mutation?
400
This null model named after a mathematician and a physician shows that under specific conditions genotypes will not change from one generation to the next.
What is the Hardy-Weinberg Principle/Equilibrium?
400
A form of natural selection where mate and competitors act as selection pressures
What is sexual selection?
400
A trait that is similar because it was inherited from a common ancestor.
What is a homologous trait?
400
The process depicted here that contrasts with cladogenesis where a single populations splits and evolve independently to become new species.
What is anagenesis?
400
These small and often colorful fish have been used to demonstrate evolution by natural selection in the lab and in the field.
What are guppies?
500
This phenomena where a single gene affects multiple traits can limit natural selection.
What is pleiotropy?
500
This form of natural selection removes intermediate phenotypes.
What is disruptive selection?
500
This biogeographic boundary in the Malay Archipelago marks the shift from Asian to Australian animal communities.
What is Wallace's Line?
500
This long-term pattern of speciation suggests that speciation occurs rapidly after long periods of stasis.
What is punctuated equilibrium?
500
This French naturalist proposed that individuals evolved new traits then passed them on to offspring.
Who was Lamarck?