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Evolution/Natural

QuestionAnswer
Species a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding
Natural selection the process whereby organisms better adapted to their environment tend to survive and produce more offspring
Common ancestor an ancestor that two or more descendants have in common
Chemical evolution evolutionary theory describing formation of organic molecules from inorganic molecules
Endosymbiotic theory states that the mitochondria and chloroplasts in eukaryotic cells were once aerobic bacteria (prokaryote) that were ingested by a large anaerobic bacteria (prokaryote)
Symbiotic relationship a close ecological relationship between the individuals of two (or more) different species
Variation refers to an individual that possesses characteristics different from the others of the same kind
Overproduction more offspring than can be supported by the environment
Descent with modification the idea that species change over time, give rise to new species, and share a common ancestor
Gene pool is the total genetic diversity found within a population or a species
Genetic diversity the amount of genetic information within and among individuals of a population, a species, an assemblage, or a community/
Bottleneck effect an extreme example of genetic drift that happens when the size of a population is severely reduced. Events like natural disasters (earthquakes, floods, fires)
Founder effect is the reduction in genetic variation that results when a small subset of a large population is used to establish a new colony
Gene flow the introduction of genetic material (by interbreeding) from one population or a species to another
Genetic drift refers to random fluctuations in the frequencies of alleles from generation to generation due to chance events
Divergent evolution refers to the process by which interbreeding species diverged into two or more evolutionary groups
Created by: user-1965245
 

 



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