Assertion: heterotrophic dinoflagellate | /r/CapableOf | have had photosynthetic ancestors
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text: Whether the chromalveolate hypothesis turns out to be correct or not, at least the dinokaryotic non-photosynthetic dinoflagellates seem to have had photosynthetic ancestors: photosynthetic and non-photosynthetic forms always make mixed groups in phylogenetic trees, and since the typical dinoflagellate peridinin plastid is exceedingly unlikely to have originated more than once, a repeated loss of photosynthetic ability in the non-photosynthetic groups is a virtual certainty (Saldarriaga et al.