isogamy

biology

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June 29, 2026

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Isogamy is a form of sexual reproduction where the gametes (sex cells) are morphologically indistinguishable, meaning they are the same size and shape. This occurs in some species of algae, fungi, and protozoans. In contrast, heterogamy (or anisogamy) involves gametes that differ in form, and oogamy is a specialized form of heterogamy where there is a large, non-motile egg and a small, motile sperm. All gametes are typically haploid, containing half the genetic material, and they fuse during fertilization to form a diploid zygote.123

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gamete
…be identical in form (isogamy), as in certain species of algae, fungi, and protozoans, or there may be more than one morphological type (heterogamy, or anisogamy), as with many green algae of the genus Chlamydomonas. Gametes of animals, some algae and fungi, and all higher
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…be identical in form (isogamy), as in certain species of algae, fungi, and protozoans, or there may be more than one morphological type (heterogamy, or anisogamy), as with many green algae of the genus Chlamydomonas. Gametes of animals, some algae and fungi, and all higher
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plant reproductive system
The cellular basis
, isogamous) or they may be distinguishable only on the criterion of size (i.e., heterogamous). The larger gamete, or egg, is nonmotile; the smaller gamete, or sperm, is motile. The last type of gametic difference, egg and sperm, is often designated as oogamy. In oogamous reproduction,…
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, isogamous) or they may be distinguishable only on the criterion of size (i.e., heterogamous). The larger gamete, or egg, is nonmotile; the smaller gamete, or sperm, is motile. The last type of gametic difference, egg and sperm, is often designated as oogamy. In oogamous reproduction,…
Read More