Definition

Noun: 1. (Biology): A type of sexual reproduction in which the fusing gametes (reproductive cells) are morphologically identical, particularly in size and form. This contrasts with anisogamy, where gametes differ in size.

Usage

• General Statement: "Isogamy" is a technical term used primarily in biological and botanical contexts to describe a specific reproductive strategy.
• In a Sentence: The term is used as a subject or object to describe a reproductive process.
  • Isogamy is observed in some species of algae and fungi.
  • The study compared the evolutionary advantages of isogamy and anisogamy.

Advanced Usage

• Theoretical Context: In evolutionary biology, isogamy is often discussed as the ancestral state from which anisogamy (with small motile sperm and large non-motile eggs) evolved.
  • The transition from isogamy to anisogamy is a key event in the history of sexual reproduction.

Variants and Related Words

• Isogamous (adjective): Characterized by isogamy.
  • Chlamydomonas is an isogamous green alga.
• Anisogamy (noun): Sexual reproduction involving the fusion of gametes that differ in size and/or form.
• Gamete (noun): A mature haploid reproductive cell.

Synonyms

• Homogamy: This term is sometimes used synonymously with isogamy, though it can have other meanings in botany (simultaneous maturation of stamens and pistils).

Notes

• The term is highly specialized. It is not used in idioms, phrasal verbs, or everyday language. Its usage is confined to scientific discourse.

Noun

1. (biology) reproduction by the union or fusion of gametes of the same size and structure