mitosis

• mitosis

  process by which one cell divides to form two cells that are identical to each other and the parent cell from which they came from
• chromosomes form the chromatin network inside the nucleus of cells. Chromosomes are made from DNA and protein. small part of a DNA that controls or carries the genetic code for one or more characteristics or functions is a gene.
• Importance of mitosis

  forms new cells which can be used for the growth in size of the organism, repair and replacement of damaged or worn-out cells, brings out asexual and vegetative reproduction in some animals. allows for simple unicellular organisms to produce asexually.
• interphase

  longest phase in the cell cycle. DNA replication occurs before prophase starts, i.e. and identical copy of each chromosome is produced.
• prophase

  The chromatin network starts to unwind and form visible chromosomes. Each chromosome is made from to chromatids [because of DNA replication]. The nuclear membrane and nucleolus start to disappear.
• Metaphase

  chromosomes arrange themselves along the middle of the cell in a single row and are attached to the spindle fibers.
• Anaphase

  when the spindle fibers contract, the two chromatids are pulled towards the opposite ends of the cell causing the chromosomes to split at the centromere.
• Telophase

  two groups of chromosomes are present at each end of the cell. Thus, we have two nuclei within which we had the same number of chromosomes as the original.