How to cells divide?

Cells divide using mitosis. The stages of mitosis are: interphase, prophase, metaphase, anaphase and telophase. In interphase the DNA is loose in the nucleus and is copied to result in 2 identical copies of all chromosomes. During prophase the DNA condenses and become X-shaped structures which are what we think of when we think of chromosomes because they can be seen down a microscope. Each chromosome is formed of 2 sister chromatids which are identical. At the end of prophase the nuclear membrane dissolves and the mitotic spindle move to opposite poles of the cell. In metaphase the chromosomes line up along the equator of the cell. The centrioles are at opposite poles of the cell and the mitotic spindle fibres extend from them to attach to each of the sister chromatids. In anaphase the sister chromatids are pulled apart by the mitotic spindle which pulls one sister chromatid to one pole and the other sister chromatid to the opposite pole. In telophase there is now a full set of chromosomes at each pole, a new membrane forms around each set to form 2 new nuclei. Cytokinesis then occurs where the cell membrane pinches in to divide into 2 new daughter cells.

Answered by Connie E. Biology tutor

2002 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

How can antibacterial resistance be limited?


What is an enzyme? Explain their importance?


How are bacteria genetically modified for human benefit?


Describe how different environmental factors affect the direction of growth of roots and shoots making reference to plant hormones


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences