facultative

Facultative multicellular organisms are organisms that can exist either as single cells or in a multicellular form depending on environmental conditions.

The variability of cats’ social tendencies has a fancy name: “facultative sociality.”

For the first time, scientists have induced facultative parthenogenesis, a form of asexual reproduction, in an animal that usually reproduces sexually.

However, there remain many unknowns about parthenogenesis, particularly the form known as facultative parthenogenesis, which is quite rare and only happens in animals that sexually reproduce.

"Certain temperature conditions may foster all-female populations, which can be overcome through facultative parthenogenesis," he said.