Why – Reproduction, growth or repair.
Binary Fission: Asexual reproduction by division of one cell or body into two equal
or nearly equal parts.
Septum: A wall between two cavities.
Septation: In prokaryotic cell division, the formation of a septum where new cell
membrane and cell wall is formed to separate the two daughter cells.
Mitosis: Somatic cell division, nuclear division in which the duplicated
chromosomes separate to form two genetically identical daughter nuclei.
Chromatin: The complex of DNA and proteins of which eukaryotic chromosomes
are composed; chromatin is highly uncoiled and diffuse in interphase nuclei,
condensing to form the visible chromosomes in prophase.
Heterochromatin: The portion of a eukaryotic chromosome that is not transcribed
into RNA; remain condensed in interphase and stains intensely in histological
Euchromatin: The portion of a eukaryotic chromosome that is transcribed into
mRNA; contains active genes that are not tightly condensed durin