Traduction et analyse de mots par intelligence artificielle ChatGPT
Sur cette page, vous pouvez obtenir une analyse détaillée d'un mot ou d'une phrase, réalisée à l'aide de la meilleure technologie d'intelligence artificielle à ce jour:
- comment le mot est utilisé
- fréquence d'utilisation
- il est utilisé plus souvent dans le discours oral ou écrit
- options de traduction de mots
- exemples d'utilisation (plusieurs phrases avec traduction)
- étymologie
Qu'est-ce (qui) est morula - définition
![First stages of cleavage in a fertilized mammalian egg. Semidiagrammatic. z.p. [[Zona pellucida]]. p.gl. [[Polar bodies]]. a. Two-cell stage. b. Four-cell stage. c. Eight-cell stage. d, e. Morula stage.](https://commons.wikimedia.org/wiki/Special:FilePath/Gray9.png?width=200 "First stages of cleavage in a fertilized mammalian egg. Semidiagrammatic. z.p. [[Zona pellucida]]. p.gl. [[Polar bodies]]. a. Two-cell stage. b. Four-cell stage. c. Eight-cell stage. d, e. Morula stage.")
![Spiral cleavage in marine snail of the genus ''[[Trochus]]''.](https://commons.wikimedia.org/wiki/Special:FilePath/Spiral cleavage in Trochus.png?width=200 "Spiral cleavage in marine snail of the genus ''[[Trochus]]''.")
Wikipédia
In embryology, cleavage is the division of cells in the early development of the embryo, following fertilization. The zygotes of many species undergo rapid cell cycles with no significant overall growth, producing a cluster of cells the same size as the original zygote. The different cells derived from cleavage are called blastomeres and form a compact mass called the morula. Cleavage ends with the formation of the blastula, or of the blastocyst in mammals.
Depending mostly on the concentration of yolk in the egg, the cleavage can be holoblastic (total or entire cleavage) or meroblastic (partial cleavage). The pole of the egg with the highest concentration of yolk is referred to as the vegetal pole while the opposite is referred to as the animal pole.
Cleavage differs from other forms of cell division in that it increases the number of cells and nuclear mass without increasing the cytoplasmic mass. This means that with each successive subdivision, there is roughly half the cytoplasm in each daughter cell than before that division, and thus the ratio of nuclear to cytoplasmic material increases.
