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pronuclei    
pronucleus的复数形

pronucleus的复数形

Pronucleus \Pro*nu"cle*us\, n.; pl. {Pronuclei} (-[imac]). [NL.
See {Pro-}, and {Nucleus}.] (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.
[1913 Webster]

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.
[1913 Webster]


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  • Pronucleus - Wikipedia
    A pronucleus (pl : pronuclei) denotes the nucleus found in either a sperm or egg cell during the process of fertilization The sperm cell undergoes a transformation into a pronucleus after entering the egg cell but prior to the fusion of the genetic material of both the sperm and egg
  • Introduction into the creation and development of the pronuclei . . .
    In an impregnated oocyte this happens for every chromosome set – the one from the father and the one from the mother – each in a separate pronucleus The time needed for the duplication of the DNA amounts to roughly 12-18 hours During this time span, the two pronuclei also get closer to each other spatially
  • Zygote - Embryology
    The pronuclei (singular: pronucleus) are the initial male and female nuclei, containing their respective genetic material, that occur in the early zygote These two haploid nuclei fuse to form the diploid nucleus of the late zygote
  • Pronucleus - an overview | ScienceDirect Topics
    The two pronuclei must come together near the center of the fertilized egg and form a single diploid nucleus; a process called karyogamy Only when the pronuclei become a single nucleus is the fertilized egg called a zygote (Fig 2)
  • Pronuclei | definition of pronuclei by Medical dictionary
    In embryology, the nuclear material of the head of the sperm (male pronucleus) or of the oocyte (female pronucleus), after the oocyte has been penetrated by the sperm; each pronucleus normally carries a haploid set of chromosomes, so that the merging of the pronuclei in fertilization reestablishes diploidy
  • Pronucleus | biology | Britannica
    The remaining pronuclei divide mitotically; one pronucleus from each organism is exchanged, and the new micronuclei and macronuclei of the next generation are formed
  • Pronuclei: Anatomy and Physiology I Study Guide | Fiveable
    Pronuclei are the nuclei of the sperm and egg cells that fuse during fertilization, combining the genetic material from both parents to form the first cell of a new organism
  • PRONUCLEUS Definition Meaning | Dictionary. com
    The DNA from mum and dad form two balls of genetic information in the embryo called pronuclei, which will fuse to create the genetic blueprint for a child From BBC
  • pronucleus - Repropedia
    Similarly, the sperm DNA will also decondense and the male pronucleus will form In many species, the male pronucleus is larger than the female one A diploid zygote will be produced when the haploid male and female pronuclei fuse just prior to the first mitotic division
  • Pronucleus _ AcademiaLab
    During fertilization, the pronuclei of an egg and at least one sperm fuse to create the single nucleus of the zygote Male pronucleus The male pronucleus derives from the stimulated sperm head by being immersed in the oocyte's cytoplasm Via the sperm head, a set of tightly packed haploid chromosomes has penetrated the oocyte's cytoplasm





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