Biology / Unit 9 Bio 2021 review, 2 to 3 minutes
Tracing a Protist Lineage's Endosymbiotic Origin and Ecological Role
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The idea
This capstone traces one photosynthetic dinoflagellate lineage from its secondary endosymbiotic chloroplast origin through its SAR supergroup placement to its ecological role as a coral symbiont.
Where people slip
A dinoflagellate's ecological role as a coral symbiont depends on the two-step endosymbiotic history traced here— losing sight of either the primary or the secondary event obscures why this one photosynthetic lineage ended up living inside an animal's tissue at all.
Your place on the trail
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