Achlya bisexualis is a species of water mold. It is described as being close to Achlya flagellata, differing by it striking heterothallism and less elongated gemmae.
In 1936, it was discovered that the species contains a number of hermaphrodite females, which behave as true females in the presence of strong males.
Some of the protein of Achlya bisexualis have been sequenced, such as Actin, Cytochrome c oxidase subunit 1 & 2, Pyruvate kinase etc.
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