Briefly describe the stages of mitosis

Interphase: DNA in chromosomes replicates to have double copies of itself for mitosis. 1. Prophase: DNA in chromosomes condenses therefore becomes more visible and the nucleus membrane disappears. 2. Metaphase: Chromosomes line up in the centre (equator) of the cell bound via centrioles at their centromeres. 3. Anaphase: Chromosomes break at centromeres and sister chromatids move to opposite ends of the cell. 4. Telophase: New nuclear membranes forms around the chromosomes at each end of cell. Nucleoli (multiple nucleus) reappear and cell continues to elongate. Cytokinesis: Cell membrane pinches in causing parent cell to divide into 2 identical daughter cells.

OA

Related Biology GCSE answers

All answers ▸

Describe the structure and function of the myelin sheath?


Tobacco mosaic virus (TMV) can cause plants to produce less chlorophyll. This causes leaf discoloration. Explain why plants with TMV have stunted growth.


Name two types of effectors in the body, and the response that effector makes


Osmosis and diffusion are both examples of passive transport. Describe another similarity and a difference.