pronucleus
Americannoun
-
pronuclei
plural
noun
Other Word Forms
Noun Inflected 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.
See Examples For:
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
In this way the centrosome approaches the female pronucleus, and thus finally the two nucleii are brought into close proximity.
From The Story of the Living Machine A Review of the Conclusions of Modern Biology in Regard to the Mechanism Which Controls the Phenomena of Living Activity by H. W. (Herbert William) Conn
At the same time its tail begins to disappear, and the enlarged head proceeds to make its way directly towards the nucleus of the ovum which, as before stated, is now called the 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 George John Romanes
Only the female pronucleus is shown in this figure.
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 George John Romanes
This accounts for the fact, which has been often observed, that the female pronucleus is not surrounded by protoplasmic radiations, whereas such radiations are present round the male pronucleus in its approach to the female.
From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" by Various
PN, pronuclei; PNF, pronuclear fading. b, Representative human embryo at each developmental stage analysed.
From Nature ● Sep. 19, 2017
The two haploid nuclei derived from the sperm and oocyte and contained within the egg are referred to as pronuclei.
From Textbooks ● Jun. 19, 2013
The pronuclei then migrate toward each other, their nuclear envelopes disintegrate, and the male- and female- derived genetic material intermingles.
From Textbooks ● Jun. 19, 2013
If the oocyte is fertilized, Ramos will see the formation of two pronuclei, then the fusion of the diploid cell, or zygote.
From Slate ● May 23, 2012
In Echinus, for instance, the two pronuclei fuse, and the spindle and chromosomes are formed from the zygote nucleus, whereas in the mouse the two pronuclei retain their distinctness during the formation of the chromosomes.
From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" by Various
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