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10 Cards in this Set
- Front
- Back
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Clade |
A group of organisms that consists of a common ancestor and all its lineal descendants |
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Ecological niche |
The role and space that an organism fills in an ecosystem, including all its interactions with the biotic and abiotic factors of its environment |
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Keystone Species |
A plant or animal that plays a unique and crucial role in the way an ecosystem functions |
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Carrying Capacity |
The size of the population that can be supported indefinitely on the available resources and services of that ecosystem |
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Genome |
All the genetic material in the chromosomes of an organism, including its genes and DNA sequences |
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Gene |
Region/s of DNA that are made up of nucleotides; the molecular unit of heredity |
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Polygenic inheritance |
When one characteristic is controlled by two or more genes |
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Evolution |
Change in the genetic composition of a population during successive generations, which may result in the development of new species |
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Micro evolution |
small-scale variation of allele frequencies within a species or population, in which the descendant is of the same taxonomic group as the ancestor |
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Macro evolution |
the variation of allele frequencies at or above the level of species over geological time, resulting in the divergence of taxonomic groups, in which the descendant is in a different taxonomic group to the ancestor |
