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10 Cards in this Set
- Front
- Back
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Paraphyletic group |
One common ansector, does not have all descendants |
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Polyphyletic group |
Does not have a unique common ancestor for all descendants |
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Anagenesis |
Accumulation of changes in one species that leads to speciation |
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Cryptic species |
Two or more species that are morphological indistinguishable but don't interbreed |
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Reproductive isolation |
Two groups of organisms that can no longer exchange genes |
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Allopatric speciation |
When populations are separated by a physical or geographic barrier |
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Sympatric speciation |
Without physical isolation - reproductive isolation - individuals prefer different mating habitats |
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Polyploidy |
Duplication of sets of chromosomes within individuals |
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Autopolyploidy |
Chromosomes duplication in a single species |
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Allopolyploidy |
Combining of chromosomes of two different species |
