Everything about Opisthokont totally explained
| name = Opisthokont
| image = Amanita muscaria 01.jpg
| image_width = 250px
| fossil_range =
Neoproterozoic -
Recent
| domain =
Eukaryota
| unranked_regnum =
Opisthokonta
| subdivision_ranks = Subgroups
» Kingdom Animalia
Kingdom Fungi » Mesomycetozoea
Choanozoa » :
Capsosporids
:
Choanoflagellates
» :
Corallochytrids
:
Ministeriids
» :
Nucleariids
}}
The
opisthokonts (
Greek:
οπίσθω- (opisthō-) = "rear, posterior" +
κοντός (kontos) = "pole" for example flagellum) are a broad group of
eukaryotes, including both the
animal and
fungus kingdoms, together with the
phylum Choanozoa and
Mesomycetozoa of the
protist "kingdom". Both
genetic and ultrastructural studies strongly support that opisthokonts form a
monophyletic group. One common characteristic is that
flagellate cells, such as most animal
sperm and
chytrid spores, propel themselves with a single posterior flagellum. This gives the groups its name. In contrast, flagellate cells in other eukaryote groups propel themselves with one or more anterior flagella.
The close relationship between animals and fungi was suggested by
Cavalier-Smith in 1987, who used the informal name opisthokonta (the formal name has been used for the chytrids), and was confirmed by later genetic studies. Early phylogenies placed them near the
plants and other groups that have
mitochondria with flat cristae, but this character varies. Cavalier-Smith and Stechmann argue that the uniciliate eukaryotes such as opisthokonts and
Amoebozoa, collectively called
unikonts, split off from the other biciliate eukaryotes, called
bikonts, shortly after they
evolved.
Further Information
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