Example Sentences

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PN, pronuclei; PNF, pronuclear fading. b, Representative human embryo at each developmental stage analysed.

From Nature • Sep. 19, 2017

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

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

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

There appears, however, to be some variation in this respect: cases have been observed in the mouse in which fusion of the pronuclei occurs before the separation of the chromosomes.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" by Various