Asexualis

Asexualis is a term used in speculative biology and science fiction to denote an imagined genus or lineage of organisms that reproduce exclusively by asexual means. The name derives from the Latin asexualis, meaning 'without sex'. In many depictions, Asexualis species are described as lacking male-female morphologies and reproducing by cloning, budding, fission, or vegetative propagation. The concept is used to explore consequences of obligate clonality, such as reduced genetic diversity, potential for rapid population expansion in stable environments, and mechanisms to repair DNA damage without recombination.

In taxonomy, Asexualis is typically presented as a stylized placeholder genus in world-building or thought experiments, rather than an observed real lineage. In fictional contexts, members may display traits such as simple body plans, high resilience, and reliance on asexual cycles, with occasional sexually reproducing exceptions used to plot tension or evolutionary diversification. Real-world analogues include numerous bacterial, fungal, algal, and plant groups that can reproduce asexually.

Scholars and writers use Asexualis to illustrate topics in evolutionary biology, population genetics, and ecology, including genetic drift, mutation accumulation, and adaptation under clonal reproduction. The term is not part of formal scientific nomenclature outside of its fictional or pedagogical use.