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Ch. 5 EMS VOC

Chapter 5 Lessons 1-2 - Mr. Pasone's EMS

TermDefinition
Evolution In general terms, change over time
Gene A sequence of DNA that codes for a particular trait
Mutation A change in DNA
Genetic Drift Biological evolution that occurs by chance
Natural Selection the process by which traits that improve an organism's chances for survival and reproduction are passed on more frequently to offspring than those that do not
Fitness The degree in which an organism can produce successfully in it's environment
Adaption A heritable trait that increases the likelihood of an individual's survival and reproduction
Artificial Selection A human-controlled process to produce individuals with certain traits
Speciation The process by which new species are generated
Extinction The disappearance of a specific species from Earth
Niche An organism's habitat, resource use, and fundamental role in a community
Tolerance The ability to survive and reproduce under changing circumstances
Resource Partitioning The process that allows different species to share common resources
Predation The process by which individuals of one species (the predators), hunt, capture, and feed on individuals of another species
Coevolution The process by which two species evolve in response to changes in each other
Parasitism A relationship between two organisms in which one organism (the parasite) depends on the other (the host) for nourishment or some other benefit
Symbiosis The long-term and physically close relationship between two organisms from different species in which at least one organism benefits; commensalism, mutualism, and parasitism are all symbiotic relationships
Herbivory The act of feeding on a plant
Mutualism A relationship between two organisms from different species in which both organisms benefit
Commensalism A relationship between two organisms from different species in which benefits and the other is unaffected
 

 



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