Evolution 1
Change in a population's gene pool over time
What is evolution?
The process of selection conducted under human direction
Artificial selection
The process by which new species are generated
Speciation
An organism's use ofresources and its functional role in a community.
Niche
Long-lasting and physically close relationship in which at least one organism benefits.
Symbiosis
A sequence of DNA that codes for a particular trait
Gene
A heritable trait that increases an individual’s fitness
Adaptation
Speciation caused by geographic separation of populations
Allopatric speciation
When multiple organisms seek the same limitedresource, such as food, light, water, or space
Competition
A relationship in which two or more species benefit
Mutualism
Changes in DNA
Mutation
How reproductively successful an organism is in its environment.
Fitness
What happens when environmental conditions change rapidly or severely enough that a species cannot adapt to the change.
Extinction
An individual of one species hunts, captures, kills, and consumes an individual of another species
Predation
A relationship in which one species benefits and the other is unaffected
Commensalism
Biological evolution that occurs by chance
Genetic drift
Scientist that proposed the concept of natural selection
Charles Darwin
The disappearance of a species from Earth
Extinction
The interaction in which an animal feeds on a plant
Herbivory
A relationship in which one organism depends on another for nourishment or some other benefit. In the process, the host is harmed.
Parasitism
Traits that improve an organism’s chances for survival and reproduction are passed on more frequently to future generations than those that do not.
Natural selection
Author of "On the origin of Species"
Charles Darwin
Number of mass extinctions on Earth
Five
The process by which two species evolve in response to changes in each other
Coevolution
The species partition, or divide, the resource they use in common by specializing in different ways
Resource partitioning