Nuclear Envelope:This is a double membrane that encloses the cell's nucleus, separating it from the cytoplasm. It reforms around each set of chromosomes during telophase.
Cleavage Furrow:This is an indentation that develops in animal cells during cytokinesis, helping to divide the cell into two daughter cells.
Chromatin:The material of which chromosomes are composed. It condenses to form chromosomes during cell division and relaxes back into chromatin after mitosis ends.