Isogamy
Sexual reproduction form involving gametes of the same size / From Wikipedia, the free encyclopedia
Not to be confused with Isogyny, marriage between people of similar status or age
Isogamy is a form of sexual reproduction that involves gametes of the same morphology (indistinguishable in shape and size), and is found in most unicellular eukaryotes.[1] Because both gametes look alike, they generally cannot be classified as male or female.[2] Instead, organisms undergoing isogamy are said to have different mating types, most commonly noted as "+" and "−" strains.[3]