Speciation (AQA GCSE Biology): Flashcards
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Definition of speciation
Definition of speciation
Formation of new species
Geographical isolation meaning
Geographical isolation meaning
Populations of same species separated from each other
Examples of geographical isolation (name 2)
Examples of geographical isolation (name 2)
Islands, rivers, volcanic eruptions, mountains
Key test for separate species
Key test for separate species
Cannot breed to produce fertile offspring
Alfred Wallace years
Alfred Wallace years
1823-1913
Wallace and Darwin publication year
Wallace and Darwin publication year
1858
Wallace's independent theory
Wallace's independent theory
Evolution by natural selection
Wallace effect meaning
Wallace effect meaning
Hybrids less well adapted than parents; drives speciation
Anole lizards example shows
Anole lizards example shows
Geographical isolation leads to speciation
Adaptive radiation definition
Adaptive radiation definition
One species evolving into multiple in different environments
New Zealand flightless birds related to
New Zealand flightless birds related to
Flying species in Australia
Why NZ birds lost flight
Why NZ birds lost flight
No natural predators, so flight not needed for survival
Speciation timeline
Speciation timeline
Gradual process over many generations
What Wallace studied in toxic animals
What Wallace studied in toxic animals
Warning colours