Oxytricha trifallax

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Oxytricha trifallax
Oxytricha trifallax.jpg
Oxytricha trifallax
Scientific classification
Domain: Eukaryota
(unranked): Alveolata
Phylum: Ciliophora
Class: Spirotrichea
Subclass: Stichotrichia
Order: Sporadotrichida
Family: Oxytrichidae
Genus: Oxytricha
Species: O. trifallax
Binomial name
Oxytricha trifallax
Stein, 1859

Oxytricha trifallax is a ciliate protozoan species in the genus Oxytricha.

O. trifallax is notable for its ability to split its 16,000 chromosomes resulting in it having as many as 225,000 tiny strands of DNA.[1] For comparison, humans have 46 chromosomes, consisting of 23 pairs.


  1. ^ The Oxytricha trifallax Macronuclear Genome: A Complex Eukaryotic Genome with 16,000 Tiny Chromosomes.

http://www.princeton.edu/main/news/archive/S41/01/85G88/index.xml? http://www.plosbiology.org/article/info:doi%2F10.1371%2Fjournal.pbio.1001473

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