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Definition
| Type organism or population whose memebers share characteristics, freely breed produce fertile offspring |
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Definition
| Group of individuals that live in particular area |
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Term
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Definition
| Change over time, biological evolution, genetic change in population |
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Term
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Definition
| process inherited characteristics that enhance survival and reproducion passed on more frequently to future generations than those that dont altering genetic mackup |
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Term
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Definition
| Trait that lead to better reproductive success in environment promoting success |
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Term
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Definition
| Genetic variation among individuals |
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Term
Natural Selection 3 Alterations
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Definition
~Directional selection: Selection driving feature one direction or anoter
~Stabilizing Selection: Intermediate traits, preserving status quo
~Disruptive Selection: Traits diverge from their starting condition in two or more directions
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Term
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Definition
Natural selection can cause closley related species to deverge in appearance
ex. diff plumage color or bills |
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Term
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Definition
| Allowing only like individuals to breed with like under human direction |
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Term
| Selective Breeding examples |
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Definition
| Corn larger kernels, wheat rice larger grains, broccoli, cauliflower exct. |
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Term
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Definition
| Variety of life accross all levels biological organization species genes and population communities |
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Term
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Definition
| Process by which new species are generated |
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Term
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Definition
Caused by physicial seperation of population over geographic distance
[image] |
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Term
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Definition
| The process through which a species evolve from one single ancestral species |
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Term
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Definition
| Occurs when environmental conditions change rapidly or severly enough that species cannnot adapt genetically to the change |
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Term
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Definition
| Occurs nowhere else on the planet ex. the golden toad |
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Term
| Background Extinction Rate |
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Definition
| Extinction occurs gradually one species at a time |
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Term
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Definition
~Population growth
~Development
~Resource Depletion |
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Term
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Definition
Study of interactions among organisns and between organisims and their invironments
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Term
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Definition
| The cumulative total of living things on earth |
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Term
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Definition
| Examines dynamics of population change and factors that affect the distribution and abundance of members |
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Term
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Definition
| Multiple interacting species that live in the same area |
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Term
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Definition
| Communities and abiotic (non living) material and forces with which their memebers interact ex. water, soil, energy |
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Term
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Definition
| A species reflects use of resources and functional role in community |
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Term
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Definition
| Indivuduals are evenly spaced |
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Term
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Definition
| Organism with very specific requirments |
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Term
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Definition
| Organisms use wide array of recources |
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Term
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Definition
| number of individuals in a population per unit area |
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Term
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Definition
| Spatial arrangement of organisms in an area |
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Term
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Definition
| Located in no particular position; usually recources are plentiful |
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Term
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Definition
| population increases by a fixed percentage each year |
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