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15 Cards in this Set
- Front
- Back
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What is ecology?
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The study of interacting groups of organisms and the processes that determine their composition, abundance, rate of turnover, utilization of resources, and distribution.
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Ecological levels of biological organization?
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Atoms -> Molecules -> Cells -> Tissue > Organ -> Organ system -> Organism -> Species -> Population -> Species -> Community -> Ecosystem
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Much of ecology is based on?
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The premise of natural selection favoring traits that maximize fitness for individual organisms; the evolutionary basis of evolution.
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Evolution?
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Change in the genetic composition of a population.
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Genotypes can change between generations. T/F?
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True
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How does evolution work?
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Natural selection
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What is natural selection?
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Evolution resulting from differential abilities of phenotypes to obtain representation in later generations because those phenotypes differentially impact organisms' individual reproduction.
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How is natural selection generally viewed?
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Viewed as being driven by the environment rather than mate choice or competition for mates.
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Natural selection was founded by?
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Darwin and Wallace (mid 1800's)
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What is the basis of natural selection? (4)
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1.) Characteristics are inherited.
2.) Pre-existing, "random" variation in populations (evolution itself not random) 3.) Excess of offspring 4.) Competition for resources |
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Inherited characteristics that best enable individuals to compete for limited resources will?
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Increase in frequency in later generations relative to other characteristics.
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The Synthetic Theory of Evolution is a combination of?
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Darwin and Wallace's ideas and Mendelian genetics
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The big picture of natural selection is? ***
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1.) Natural selection operated by way of average differential reproductive success, rather than differential survival.
2.) Th fittest are those that leave the most offspring, not those that survive the best. *** |
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Some traits cause organisms to survive worse but to reproduce better, these traits are favored. T/F?
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True
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Why is survivorship important evolutionarily?
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Only if it impacts an organism's lifetime reproductive success/fitness.
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