isogamous
Adjective: - Reproductive biology: "isogamous" describes a type of sexual reproduction in which the gametes (sex cells) are of similar size, shape, and structure, making them morphologically indistinguishable from each other. This contrasts with anisogamous reproduction, where gametes differ in size (e.g., a small sperm and a large egg). - Characteristic of certain organisms: "isogamous" applies to species, such as some algae, fungi, and protists, where both mating types produce identical-looking gametes that fuse during fertilization.
- (Both sex cells look the same.)
- (These algae have identical swimming sex cells.)
- involves the fusion of two motile gametes.* (The fungus reproduces with matching gametes.)
"isogamous species": a species that reproduces via isogamy.
- Chlamydomonas is a well-known isogamous green alga. (This alga has two mating types with identical gametes.)
"isogamous fertilization": the process of fusion between two morphologically similar gametes.
- Isogamous fertilization often occurs in water, where gametes swim together. (The fusion happens in an aquatic environment.)
Isogamy (n): the condition or process of being isogamous; sexual reproduction involving gametes of similar size and form.
- Isogamy is considered the ancestral form of sexual reproduction in many lineages. (It is a primitive reproductive strategy.)
Isogamete (n): a gamete that is morphologically similar to the one it fuses with.
- Each isogamete carries a single set of chromosomes. (The identical-looking sex cell contains haploid genetic material.)
Anisogamous (adj): the opposite of isogamous, describing reproduction with gametes of different sizes.
- Humans are anisogamous, with small sperm and large eggs. (Our gametes are unequal in size.)
- Homogamous: having gametes of similar form (rarely used, often considered a synonym in botanical contexts).
- The homogamous algae show no size difference between gametes. (They are isogamous.)
- No common idioms exist for "isogamous," as it is a technical scientific term.