in a eukaryotic cell, one of the structures in the nucleus that are made up of DNA and protein; in a prokaryotic cell, the main ring of DNA
in eukaryotic cells, a process of cell division that forms two new nuclei, each of which has the same number of chromosomes
the life cycle of a cell; in eukaryotes, it consists if a cell-growth period in which DNA is synthesized and a cell-division period in which mitosis takes place
a period between two mitotic or meiotic divisions during which the cell grows, copies its DNA and synthesizes proteins
the first stage of mitosis or meiosis in eukaryotic cell division, during which the nuclear envelope breaks down and strands of chromatin form into chromosomes
the stage in mitosis or meiosis in which the duplicated chromosomes line up along the equatorial plate of the spindle
the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
is the third stage
the final stage of mitosis or meiosis, during which a nuclear membrane forms around each set of new chromosomes
One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
a network of microtubules that forms during mitosis and moves chromatids to the poles
the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins
The opposite ends of the cell. There is a pair of centrioles at each end.
where cells line up in metaphase
A double membrane across the midline of a dividing plant cell, between which the new cell wall forms during cytokinesis.
the division of the cytoplasma of a cell; cytokinesis follows the division of the cell's nucleus by mitosis or meiosis