HOMOLECITHAL Meaning and
Definition
-
Homolecithal refers to an embryonic condition observed in certain animal eggs, particularly those of some invertebrates and lower vertebrates, that possess a uniform distribution of yolk within the cytoplasm. The word originates from the combination of the Greek words "homo," meaning "same" or "uniform," and "lecithal," which refers to the presence of yolk in an egg.
In homolecithal eggs, the yolk is evenly distributed throughout the cytoplasm, resulting in a consistent density throughout the entire egg. This stands in contrast to the heterolecithal condition, where the yolk is not equally distributed, leading to areas of varying density.
Homolecithal eggs are typically small in size and contain a modest amount of yolk. They are common in organisms with relatively simple developmental processes, such as certain invertebrates and lower vertebrates like fish and amphibians.
The presence of homolecithal eggs has implications for embryonic development. The uniform distribution of yolk provides a homogeneous nutrient supply to the developing embryo, allowing for consistent growth and development. This type of egg is often associated with direct development, where the embryo undergoes minimal or no metamorphosis and hatches as a miniature, fully formed version of the adult organism.
Overall, the term homolecithal describes the characteristic distribution of yolk in certain animal eggs, indicating a uniform distribution rather than a concentration in specific regions.
Common Misspellings for HOMOLECITHAL
- gomolecithal
- bomolecithal
- nomolecithal
- jomolecithal
- uomolecithal
- yomolecithal
- himolecithal
- hkmolecithal
- hlmolecithal
- hpmolecithal
- h0molecithal
- h9molecithal
- honolecithal
- hokolecithal
- hojolecithal
- homilecithal
- homklecithal
- homllecithal
- homplecithal
- hom0lecithal
Etymology of HOMOLECITHAL
The word "homolecithal" is derived from two components: "homo" and "lecithal".
The prefix "homo" comes from the Greek word "homos", meaning "same" or "similar". It is often used in scientific terminology to convey the concept of similarity or equality.
The term "lecithal" originates from the Greek word "lekithos", which refers to egg yolk. It denotes the presence of yolk in the egg or ovum, which serves as a nutrient source for the developing embryo.
Therefore, when combined, "homolecithal" signifies an egg or ovum that contains an equal distribution of yolk throughout its cytoplasm, as opposed to being concentrated at one pole. This term is commonly used in embryology to classify the yolk distribution pattern in different organisms.
Infographic
Add the infographic to your website:
