Early ultrastructural features are the disintegration of cell junctions and condensations of the cytoplasm.
Fossil, ultrastructural, and ribosomal gene sequence data support this hypothesis.
The Euglenophyceae are believed to be an ancient lineage of algae that includes some zooflagellate protozoa, which is supported by ultrastructural and molecular data, though the group is taxonomically contentious.
Cryptophytes have flagellar hairs and other flagellar features that resemble those of the chromophyte algae; however, the mitochondrial structure and other ultrastructural features are distinct and argue against such a relationship.
Modern ultrastructural and molecular studies have provided important information that has led to a reassessment of the evolution of algae.
Modern ultrastructural, biochemical, and genetic evidence has rendered the term protozoan highly problematic.
Molecular and ultrastructural studies are rapidly altering traditional views of evolutionary relationships in this phylum.
Ultrastructural studies reveal magnetosomes, tiny single-domain crystals of magnetite, an iron oxide mineral sensitive to magnetic fields, or greigite, an iron sulfide mineral, in their cells.
She used ultrastructural studies to understand the host response to microbial and virus infections and also worked on the development of fluorescence microscopy to study nucleic acids.
Ultrastructural and molecular data suggest that they are in a protistan lineage that diverged from the protozoa and aquatic fungi about 300 to 400 million years ago.
