Shared Flashcard Set

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Evolution
Evolution
14
Biology
Undergraduate 4
12/07/2011

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Cards

Term
Ecological Speciation
Definition

Reproductive isolation evolves as a consequence of divergent selection on the native and introduced host

Term
Hybridization 
Definition
Gene flow between incipient species while reproductive isolation is incomplete 
Term
Allopolyploid speciation
Definition
[image]Hybrid has half A and half B
Term
Homoploid
Definition
[image] there is a mixture of A and B species
Term
“The two ever-present problems of speciation 
Definition

1.Ecological compatability

2. Reproductive isolation

Term
Catch 22 of hybrid speciation
Definition
If parent taxa can successfully hybridize, they are not species to begin with. Hence it cannot be hybrid speciation 
Term
Reproductive barriers between species are ...
Definition
environment dependent
Term
3 distributions of biodiversity...
Definition

1. Over time

2. across groups of organisms

3. across body sizes

Term
Biological Species concept
Definition
a species is defined by breeding
Term
Cohesion species concept
Definition

Genetic

Ecological

Term
Anagenesis
Definition
the species evolves together
Term

Cladogenesis
Definition
the species split and become a new species
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