Cell division by mitosis

• What is in the nucleus ?

  there is chromosomes made from the molecule of DNA
• body cells contain TWO of each chromosomes (they're paired )
• Humans body cells contain 23 PAIRED of chromosomes
• What are gametes ?

  chromosomes which are not paired
• What do chromosomes carry ?

  carry a large number of genes which determine many human features
• What is a cell cycle ?

  its when cells divide
• What is the first stage of mitosis ?

  the DNA replicates to form TWO copies of each chromosome

  the cell also grows and copies the internal structure as mitochondria and ribosomees
• What is the second stage of mitosis ?

  • mitosis occure
  • one set of chromosomes is pulled to each end of the cell , the nucleus also divides
• What is the last stage of mitosis ?

  the cytoplasm and cell membrane divide to form two identical cells
• What are the functions of mitosis ?

  • its essential for growth and development of multicellular organisms (e.g plants / animal )
  • when an organism repairs itself (when a broken bone heals )
  • happens during asexual reproduction