Diccionario ingles.comDiccionario ingles.com
Synonyms, antonyms, pronunciation

  Home
English Dictionary      examples: 'day', 'get rid of', 'New York Bay'




Pronucleus   Listen
noun
Pronucleus  n.  (pl. pronuclei)  (Biol.) One of the two bodies or nuclei (called male and female pronuclei) which unite to form the first segmentation nucleus of an impregnated ovum. Note: In the maturing of the ovum preparatory to impregnation, a part of the germinal vesicle (see Polar body, under Polar) becomes converted into a number of small vesicles, which aggregate themselves into a single clear nucleus. which travels towards the center of the egg and is called the female pronucleus. In impregnation, the spermatozoon which enters the egg soon loses its tail, while the head forms a nucleus, called the male pronucleus, which gradually travels towards the female pronucleus and eventually fuses with it, forming the first segmentation nucleus.






Collaborative International Dictionary of English 0.48








Advanced search
     Find words:
Starting with
Ending with
Containing
Matching a pattern  

Synonyms
Antonyms
Quotes
Words linked to  

only single words



Share |





Words linked to "Pronucleus" :   nucleus, cell nucleus



Copyright © 2024 Diccionario ingles.com