Download Text Comparison Matrix Concept/subject: Evolution Patterns

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Text Comparison Matrix
Concept/subject: Evolution Patterns
Patterns
Directional
Selection
Stabilizing
Direction
Disruptive
Direction
Divergent
Evolution
Convergent
Evolution
Description
-favors one extreme
-form of a trait
-results in species showing one extreme form of a trait
-Ex: woodpeckers with long beaks
-favors the average form of a trait
-results in less variation in a population
-Ex: average sized spiders
-favors both extreme forms of a trait
-can result in 2 species over a long period of time
-Ex: light and dark limpets
Divergent Evolution: species that were similar become different in
order to adapt to different environments (Adaptive radiation is a type
of divergent evolution)
Convergent Evolution : species that were unrelated evolve similar
traits in order to occupy similar environments in different parts of the
world
EX: pipe cactus and Euphorbia – both have fleshy body type and no
leaves to survive the desert but totally unrelated
Summary:
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