In plants, the zygote may be polyploid if fertilization occurs between meiotically unreduced gametes. In land plants, the zygote is formed within a chamber called the archegonium. In seedless plants, the archegonium is usually flask-shaped, with a long hollow neck through which the sperm cell enters.NA is then replicated in the two separate pronuclei derived from the sperm and ovum, making the zygote's chromosome number temporarily 4n diploid. After approximately 30 hours, fusion of the pronuclei and subsequent mitotic division produce two 2n diploid daughter cells called blastomeres.
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Grand Theft Auto III was released in October 2001 and became the PlayStation 2's biggest system seller in both the US and Europe at the time. In March 2002, Rockstar Games announced that DMA Design's name was changing to Rockstar Studios to more fully integrate the studio with its parent company based in New York. Just two months later, in May, the name was changed again, this time to Rockstar North. Grand Theft Auto: Vice City was released in October 2002 for the PlayStation 2 after nine months of development.