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Evolution and Community Ecology

Horizontales
Selection under human direction; humans have chosen and bred animals and plants with beneficial traits.
Describes an organism’s use of resources and functional role in a community.
Close, long-term association between organisms; “living together”.
Symbiotic relationship in which one organism benefits the other is harmed.
The change in a population’s gene pool over time.
Individuals of high fitness produce more offspring and therefore pass on their genes more frequently. An organism that is “fittest’’ in one place and time may not be the fittest forever.
Accidental or random change in DNA that can give rise to variation among individuals. Can be passed on to new generation.
Five known extinction events of staggering proportions, each of which wiped out a large proportion of the Earth’s species at once.
The process by which one organism hunts, kills, and consumes prey.
When organisms compete for the same limited resource.
An invasive species, that were accidentally introduced into Lake St. Clair in the late 1980s. They have spread throughout the Great Lakes system and connecting rivers.
Symbiotic relationship in which one species benefits while the other is unaffected.
Verticales
A mutualistic relationship between a fungus and a photosynthetic algae.
Species divide common resources by specializing Ex: eat different types of seeds, becoming more active in the morning or night.
Speciation due to geographic separation, for example: may be due to glacial ice sheets, rivers changing course, dry climate, or mountain building.
The disappearance of species from Earth.
This species gives birth to a large number of smaller offspring with little parental care; AKA opportunists/generalists.
A sequence of DNA that codes for a particular trait
Symbiotic relationship in which in which two or more species benefit.
Describes how reproductively successful an organism is in its environment.
All the genes present in a population.