Pleodorina algae float in a water sample under a light microscope (VIDEO)

University of Tokyo

Caption

This type of green, freshwater algae live in colonies of 32 or 64 cells and can reproduce asexually or in pairs sexually. Experts at the University of Tokyo studying the evolution of sex have discovered that the species P. starrii includes three genetically distinct sexes: male, female and bisexual.

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Video by Hisayoshi Nozaki, CC BY 4.0

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