Junk For Apes

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adaptation

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any genetically controlled characteristic that helps an organism survive & adapt under certain circumstances

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adaptive trait

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any heritable trait that allows an organism to survive thru natural selection & reproduction better under conditions

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background extinction

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normal extinction of various species as a result of changes in environmental conditions

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biodiversity

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variety of different species

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biological diversity

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the degree of variation of life forms within a given biome

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biological evolution

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change in the genetic make up of a population of a species

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differential reproduction

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phenomenon in which individuals with adaptive genetic traits produce more living offspring than do individuals

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ecological niche

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total way of life or role of species in an ecosystem

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ecosystem diversity

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the diversity of a place at the level of ecosystems
1) habitat & community diversity

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endemic species

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species that is found in only area vulnerable to extinction

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extinction

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complete disappearance of a species from the earth

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fitness

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the ability of an organism to survive & reproduce in its environment

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fossil record

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collection of the remains of organisms that have been preserved

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fossils

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recognizable evidence of organisms that lived long ago

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foundation species

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species that are the base for building communities by creating and enhancing a habitat

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functional diversity

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processes and functions needed for the survival of species and biological communities

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generalist species

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species with a broad ecological niche

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genetic diversity

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variability in the genetic makeup of individuals within a single species

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genetic variability

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rate at which certain genotypes can change in response to environmental or genetic factors

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geographic isolation

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separation of a population of species for a long time into different areas

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heritable

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to be able to better survive and reproduce under conditions

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indicator species

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species that indicate a ecosystem or community is being degraded.

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keystone species

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species that are key in affecting organisms in an ecosystem

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mass extinction

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catastrophic and global event where major groups of species are wiped out over a short period of time

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mutagens

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deals w/ chemical or radiation...allows inheritable changes in DNA molecules in genes

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mutations

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random change in DNA that can alter offspring

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native species

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species that are native bcuz they only live & thrive in a particular ecosystem

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natural selection

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when a beneficial gene reproduces more than a less-fitted one

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nonnative species

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species that migrate into an ecosystem or are subsequently placed there

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reproductive isolation

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same as geographic isolation but of a particular sexually reproducing species