Bikont

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Bikonts
Aulacanthas 01.jpg
A radiolarian
Scientific classification e
Domain: Eukaryota
(unranked): Bikonta
Cavalier-Smith, 1993
Subgroups

Apusozoa
Rhizaria
Excavata
Archaeplastida
Chromalveolata

Synonyms
  • Biciliata Cavalier-Smith, 1993
  • Diaphoretickes Adl et al., 2012
  • Diphoda Derelle et al., 2015

A bikont ("two flagellae") is any eukaryotic organism in the group Bikonta. Many single-celled members of the group, and the presumed ancestor, have two flagella.[1]

Enzymes[change | change source]

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) code for a single protein with two functions.[2]

The genes are separately translated in unikonts.

References[change | change source]

  1. Burki F. & Pawlowski J. (2006). "Monophyly of Rhizaria and multigene phylogeny of unicellular bikonts". Mol. Biol. Evol. 23 (10): 1922–30. doi:10.1093/molbev/msl055. PMID 16829542. http://mbe.oxfordjournals.org/cgi/pmidlookup?view=long&pmid=16829542. 
  2. Cavalier-Smith, Thomas (2006). "Protist phylogeny and the high-level classification of Protozoa". European Journal of Protistology 39 (4): 338–348. doi:10.1078/0932-4739-00002.