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Dictionary » P » Pronucleus Pronucleuspronucleus (Science: molecular biology) haploid nucleus resulting from meiosis. In animals the female pronucleus is the nucleus of the ovum before fusion with the male pronucleus. The male pronucleus is the sperm nucleus after it has entered the ovum at fertilization but before fusion with the female pronucleus. In plants the pronuclei are the two male nuclei found in the pollen tube.
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Results from our forumabout ZZW triploid female silkworm,Bombyx mori... treated with hot water(46 centigrade,18min) immediately after oviposition(0~10min).this hot-water treatment causes the fusion of an ameiotic femal pronucleus,2n(ZW),with a male pronucleus n(Z). but I have some question.I think the oocyte is haploid,but why it is the 2n(ZW). the oocyte should be ...
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silkworm,Bombyx mori... treated with hot water(46 centigrade,18min) immediately after oviposition(0~10min).this hot-water treatment causes the fusion of an ameiotic femal pronucleus,2n(ZW),with a male pronucleus n(Z). but I have some question.I think the oocyte is haploid,but why it is the 2n(ZW). the oocyte should be ...
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ummmmm... produces mature sperm cells containing 23 chromosomes (22 chromosomes plus either X or Y). During fertilization of eggs (or oocytes) by sperm, a pronucleus containing half the egg chromosomes is ejected from the cell. Fusion of egg and sperm cells and their nuclei (the defining acts of all sexual ...
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