Biodiversity By: Adrian Gomez. Types of Diversity Genetic diversity-involves the range of all genetic traits, both expressed and recessive Species diversity-

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Presentation transcript:

Biodiversity By: Adrian Gomez

Types of Diversity Genetic diversity-involves the range of all genetic traits, both expressed and recessive Species diversity- # of different species that inhabit a specific area Ecosystem diversity- range of habitats that can be found in defined area composed of both biotic and abiotic components

Natural Selection How organisms evolve Shows what organism has adapted, survived, reproduced, and pass it on to off springs in new environment Without a change in environment, evolution nor natural selection would occur

Stabilizing Selection Affects the extreme of the population Most common from of natural selection Individuals that deviate too far from normal conditions are removed

Directional Selection Affects the extreme of the population Do very well in future generations

Disruptive Selection Acts against individuals that have the avg condition Favor individuals at the extreme ends Population is almost split in two Evolution occurs

Evolution Change in the genetic composition of a population during successive generations as a result of natural selection acting on yhe genetic variations among individuals and resulting in the development of new species

Speciation When segments of a population of one species become so isolated that gene flow stops 3 types of adaptive radiation: General radiation-species develop new abilities to reach new parts of the environment Environmental change-species that can survive in radically changed environment and branch into new species Geographic isolation-isolated ecosystems can be colonized by a species that undergoes rapid evolution

Convergent Evolution Process whereby organisms not closely related to each other independently acquire characteristics while evolving in separate and sometimes varying ecosystems

Parallel Evolution When 2 species evolve together at the same time and in the same ecosystem and acquire similar characteristics

Ecological Succession

Extras 2 links iodiversity/ iodiversity/ life-Conservation/Biodiversity.aspx life-Conservation/Biodiversity.aspx Video link