Transcript Species and Speciation

SPECIES AND
SPECIATION
What is a species?
Morphological Species Concept
 Phylogenetic Species Concept
 Biological Species Concept
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Morphological Species Concept
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Use physical similarities to classify
species
Phylogenetic Species Concept

Use shared, unique genetic history to
classify species
Biological Species Concept
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Use ability to mate and produce
offspring that can also mate and
reproduce to classify species
How do species form?
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When a group of individuals remains
isolated from the rest of its species
long enough to evolve different traits
How can some members of a species
become separated from the main group?
Geographical Isolation
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Physical barrier
Temporal Isolation
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Reproduce at different times
Habitat/Spatial Isolation
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Occupy different habitats in the same area
Behavioral Isolation
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Different courtship displays
Resource Isolation
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Use different resources in the same area
Mechanical Isolation
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Physically incompatible
Activity
Draw a diagram of your method of
speciation
 Write a description of what is
happening
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