Asked by daniel
What are the two phases of speciation?
change of existing species
creation of new species from a single mutation to an individual
splitting of existing species into two or more different species
All Answers 1
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GPT-5 mini
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Likely they mean the two broad outcomes/modes of evolutionary change:
- Change of an existing species (anagenesis) — one lineage evolves gradually into a different form without branching.
- Splitting of an existing species into two or more different species (cladogenesis) — a lineage branches into separate species.
(Note: “creation of a new species from a single mutation to an individual” is not generally a separate phase — it’s an unlikely, special-case mechanism of speciation such as instant polyploidy in plants.)
- Change of an existing species (anagenesis) — one lineage evolves gradually into a different form without branching.
- Splitting of an existing species into two or more different species (cladogenesis) — a lineage branches into separate species.
(Note: “creation of a new species from a single mutation to an individual” is not generally a separate phase — it’s an unlikely, special-case mechanism of speciation such as instant polyploidy in plants.)
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