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Chapter 9 Key Terms

Horizontales
A species taht is specific to a location and found nowhere else in the world.
The study of where different species live throughout the world.
The finches on the Galapagos Islands that occupied different habitats and developed different behaviors.
The number of alleles, or forms of a gene, and rganism passes on to the next generation.
It defines species as genetically distinct, independently evolving units.
Natural selection that acts to reduce hybrid formation.
The number of alleles present in a population.
Diagram that takes into account the degrees of similarity among a species based on their physical characteristics and genes.
Verticales
Theory that expalins hwo all living organisms are related and how existing species adapt to their environments and new species arise.
A phrase used by Darwin to describe the fact that species changed and that evolution occurred.
The integration of genetics and evolutionary biology; one of its main architects was Sir Ronald Aylmer Fisher.
A special case of genetic drift in which a few individuals of a population leave or are forced to leave and begin a new population.
Traits that differ, often by geographic location.
The mechanism where by individuals with certain heitable traits have an increased chance of surviving and producing offspring.
Random changes in the frequency of an allele.
A change by a population to better align with specific environmental conditions.
Change in DNA.
Slection for behaviors that help your relatives survive and reproduce.
A process by which species branch off from existng species to form new species.
A gene carrying a mutation that makes its products nonfuntional.