pronucleus
Americannoun
noun
Other Word Forms
Etymology
Origin of pronucleus
From New Latin, dating back to 1875–80; see origin at pro- 1, nucleus
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The egg is then exposed to a chemical that causes the remaining pronucleus to replicate, thus giving the cell a full complement of genes.
From Time Magazine Archive
S, spermatozoön; m. pr., male pronucleus; f. pr., female pronucleus.
From Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions by Romanes, George John
I. The second polar body has just been extruded; both male and female pronuclei contain two chromatin particles; those of the male pronucleus are becoming transformed into a skein.
From Darwin, and After Darwin (Vol. 1 and 3, of 3) An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions by Romanes, George John
The egg nucleus, now known as the female pronucleus, and each body contain the reduced or haploid number of chromosomes.
From Being Well-Born An Introduction to Eugenics by Guyer, Michael F.
As soon as the nucleus of the spermatozoon, now known as the male pronucleus, reaches the interior of the egg, it enlarges and becomes similar in appearance to the female pronucleus.
From Being Well-Born An Introduction to Eugenics by Guyer, Michael F.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
