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pronucleus
(redirected from pronuclei)

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pro·nu·cle·us (pr

-n

kl

-

s, -ny

-)

n. pl. pro·nu·cle·i (-kl

-

)

The haploid nucleus of a sperm or egg before fusion of the nuclei in fertilization.

pro·nucle·ar adj.

ThesaurusLegend: Synonyms Related Words Antonyms

Noun

1.

pronucleus - the nucleus of the ovum or sperm after fertilization but before they fuse to form the nucleus of the zygote

cell nucleus, karyon, nucleus - a part of the cell containing DNA and RNA and responsible for growth and reproduction

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