Doubled chromosomes are held together by what. What makes the chromosomes become visible during prophase. Mitosis Results In Two New Nuclei That Are Genetically Identical To Each Other And To The Nucleus From Which They Were F Teaching Biology Mitosis Science Gifts The nucleus is divided during G2 phase while cytoplasm of the cell is divided during G1 phase 45. . At the equator middle of the cell. The nucleolus in the nucleus also disappears and the cell membrane disappears which makes it easy for the cell to start to divide into two. Anaphase is the next stage. 3 Show answers Another question. At the end of prophase nuclear membrane nucleolus and all the cell organelles disappears and there is no distinction between the nucleoplasm and cytoplasm. What forms during prophase to LATER attach and move chromosomes. Where do chromosomes line up during metaphase. What forms during prophase to LATER attach and mo...