Mitosis & Meiosis

Mitosis

• Cell division
• Produces cell that are - identical 
                                     have the same no. of chromosomes
• Every cell carries an identical set of genes
• Used in growth
• Uses asexual reproduction
• New cells are identical to parent cells
• In a plant you see mitosis in the meristems (buds & roots)
• In a human you see mitosis in growth
• Cells can only divide 10 times & then die
• Uncontrollable division = cancer

Meiosis

• Make gametes (sex cells)
• Each daughter cell has half the no. of chromosomes
• Sperm & egg cells have 23 chromosomes each
• In a plant the pollen & ovule have half the no. of chromosomes
• In meiosis the daugher cell have half the no. of chromosomes because when the sperm fertilses the egg, the zygote will have the original no. of chromosome (in a human the zygote will have 46 chromosomes)

Mitosis

• Growth & repair
• Asexual reproduction
• Identical cells produced (2 cells produced)

Meiosis

• Make gametes
• Sexual reproduction
• Half the no. of chromosomes (4 cells produced)