Download
slide1 n.
Skip this Video
Loading SlideShow in 5 Seconds..
DNA molecule PowerPoint Presentation
Download Presentation
DNA molecule

DNA molecule

0 Vues Download Presentation
Télécharger la présentation

DNA molecule

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Prokaryotic cells have a mechanism for division known as binary fission, which consists of the formation of a membrane which divides their cytoplasm in two.

  2. The chromosome of prokaryotic cells is a single circular DNA molecule running throughout the cytoplasm. DNA molecule DNA molecule • Replication of the DNA molecule occurs before cell division. Plasma membrane Cell wall DNA molecule formed by replication • The cell increases in size and a cell plate is formed on the inside of the plasma membrane. Each DNA molecule joins at a different point.

  3. The membrane plates pull the DNA molecules apart and separate them. • The membrane keeps growing until complete separation takes place, giving rise to two daughter cells. Daughter cells