Assertion: gametophyte's nucleus | /r/CapableOf | fuse to form haploid nucleus
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Source sentences:
text: In some cases all four megaspores survive, for example in the Fritillaria type of development (illustrated by Lilium in the figure) there is no separation of the megaspores following meiosis, then the nuclei fuse to form a triploid nucleus and a haploid nucleus.