Anisogamy
![Different forms of isogamy:A) isogamy of motile cells, B) isogamy of non-motile cells, C) conjugation.Different forms of anisogamy:A) anisogamy of motile cells, B) oogamy (egg cell and sperm cell), C) anisogamy of non-motile cells (egg cell and spermatia).](/Images/godic/202412/21/Isogamy.svg1104.png")
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Anisogamy (noun) (also called heterogamy) refers to a form of sexual reproduction involving the union or fusion of two dissimilar gametes (differing in size and/or form) — anisogamous, anisogamic, (adj.). The smaller gamete is considered to be male (sperm cell), whereas the larger gamete is regarded as female (egg cell).