Cell Division and Reproduction

A series of free High School Biology Video Lessons.

Chromosomes
Chromosomes are organized coiled structures of DNA and histone proteins found in the nucleus of eukaryotic cells. After cell division, chromosomes uncoil into protein-packed complexes known as chromatins. The form of a chromatin is described as beans-on-a-string, in which DNA connects histone proteins together.
The description and importance of chromosome.

Cell Division
Cell division is a process which splits a parent cell into two or more daughter cells. Cell division is important in DNA replication. In eukaryotes, the cell division involved is called mitosis whereas it is known as binary fission in prokaryotes. In some cases, cell division is involved in asexual reproduction.

The process of cell division.

Binary Fission
Binary fission is a form of cell division used in the asexual reproduction of prokaryotes (bacteria). It is much simpler than mitosis, consisting of DNA replication and cytokinesis.

The process of binary fission.

Mitosis
Mitosis is a type of cell division found in eukaryotic cells. The products of mitosis are daughter cells that are genetically identical to the parent cell with the same set of chromosomes. The different stages in mitosis are prophase, prometaphase, metaphase, anaphase and telophase.

The different steps in mitosis.

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