Everything about Bikont totally explained
| name = Bikonts
| image = Ceratium hirundinella.jpg
| image_caption =
Ceratium hirundinella
| domain =
Eukaryota
| subdivision_ranks = Supergroups
| subdivision =
Apusozoa
Rhizaria
Excavata
Archaeplastida
Chromalveolata
}}
A
Bikont ("two flagella") is a
eukaryotic cell with two
flagella, as its name suggests. Another shared trait of bikonts is the fusion of two
genes into a single unit: the genes for thymidylate synthase (TS) and dihydrofolate reductase (DHFR) encode a single
protein with two functions (Cavalier-Smith, 2006). The genes are separately translated in unikonts.
Some research suggests that a
unikont (a eukaryotic cell with a single flagellum) was the ancestor of
opisthokonts (Animals, Fungi and related forms) and
Amoebozoa, and a bikont was the ancestor of
Archaeplastida (Plants and relatives),
Excavata,
Rhizaria, and
Chromalveolata.
Cavalier-Smith has suggested that
Apusozoa, which are typically considered
incertae sedis, are in fact bikonts.
Relationships within the bikonts are not yet clear. Cavalier-Smith has grouped the Excavata and Rhizaria into the
Cabozoa and the Archaeplastida and Chromalveolata into the
Corticata, but at least one other study has suggested that the Rhizaria and Chromalveolata form a clade.
Further Information
Get more info on 'Bikont'.
|
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