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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The Enforcer (1976) R | 1h 36min | Action, Crime, Thriller | 22 December 1976 (USA) Dirty Harry must foil a terrorist organization made up of disgruntled Vietnam veterans. But this time, he's teamed with a rookie female partner that he's not too excited to be working with.