A unique feature of the nucleus is that it disassembles and re-forms each time mostcells divide. At the beginning of mitosis, the chromosomes condense, the nucleolus disappears, and the nuclear envelope breaks down, resulting in the release of most of the contents of the nucleus into the cytoplasm.
Hope that helped
Easy!!
the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment.
I think the third is correct
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