Isolecithal (Greek iso = equal, lekithos = yolk) refers to the even distribution of yolk in the cytoplasm of ova of mammals and other vertebrates, notably fishes of the families Petromyzontidae, Amiidae, and Lepisosteidae. [1] Isolecithal cells …

Apr 26, 2025 · The meaning of ISOLECITHAL is having the yolk small in amount and nearly uniformly distributed.

Yolk, the nutritive material of an egg, used as food by a developing, embryonic animal. Eggs with relatively little, uniformly distributed yolk are termed isolecithal. This condition occurs in invertebrates and in all but the lowest mammals. Eggs with …

May 24, 2021 · Homolecithal or Isolecithal egg: Yolk is evenly or uniformly distributed inside an egg. Such distribution is found in alecithal and microlecithal eggs. Telolecithal egg: In such eggs, most of the yolk lies near the vegetal pole. The cytoplasm and nucleus near the animal pole. Such distribution is observed in mesolecithal and macrolecithal eggs.

Apr 12, 2024 · Isolecithal or Homolecithal Egg: In isolecithal eggs, a small amount of yolk is uniformly distributed throughout the ooplasm . This type of egg is observed in species with very little yolk. Examples of isolecithal eggs can be found in …

…uniformly distributed yolk are termed isolecithal. This condition occurs in invertebrates and in all but the lowest mammals. Eggs with abundant yolk concentrated in one hemisphere of the egg are termed telolecithal.

isolecithal pertaining to eggs in which the yolk is distributed evenly throughout.

• c. ISOLECITHAL OR HOMOLECITHAL - yolk evenly distributed – common in oligolecithal eggs – marsupial mammals

holoblastic ovum one that undergoes total cleavage. isolecithal ovum one with a small amount of yolk evenly distributed throughout the cytoplasm. meroblastic ovum one that undergoes partial cleavage. primitive ovum (primordial ovum) any oocyte very early in its development.

Isolecithal definition: . See examples of ISOLECITHAL used in a sentence.