New Generations

Year 10, Pathway C

2012

Cell Division

DNA Replicates in preparation for cell division

Each new cell needs the same DNA

Cell Division

Mitosis is the reproduction of cells for growth and repair

Meiosis is the production of gametes (sex cells with half the number of chromosomes)

Mitosis in action

Mitosis Meiosis

For growth and repair For producing gametes

One stage of division Two stages of division

Produces two daughter cells

Produces four daughter cells

Daughter cells have same number of chromosomes as parent (diploid)

Daughter cells have half the number of chromosomes of parent (haploid)

Daughter cells have pairs of chromosomes

Daughter cells do not have pairs of chromosomes (only one of each pair)

Mitosis vs Meiosis