haploidius
Haploidius is a hypothetical genus of unicellular eukaryotes used to illustrate haplontic life cycles. It is described in speculative or educational contexts as having a haplontic, or haploid-dominant, life cycle in which the vegetative form is haploid and the diploid phase is limited to brief zygotic stages after fertilization. This arrangement is found in some algae and fungi, and Haploidius is commonly employed as an example to discuss ploidy and reproduction.
Taxonomy and status: There is no formal taxonomic description of Haploidius in recognized databases. In educational
Characteristics: In the hypothetical account, cells range from about 2 to 15 micrometers, are motile by flagella,
Ecology and significance: Haploidius is imagined to inhabit freshwater and marine systems as a potential primary
Etymology: The name combines haplo- with a conventional -idius suffix to signal a haploid lifestyle. See also