Mitosis and Meiosis Quick Revision notes on Mitosis and Meiosis 3.5 / 5 based on 8 ratings ? BiologyDNA and inheritanceGCSE Created by: Georgia BCreated on: 05-05-11 17:40 Mitosis Mitosis!!! There are 46 Chromosones Found in the Nucleus Before division, the cell Replicates DNA Cell Splits Creates 2 Identical Copies Produces new cells to replace Damaged Ones 1 of 4 Cell Division Process( Mitois) Cell Division Process- Mitosis DNA spread into Long Strings Cell then Duplicates DNA Chromosomes line up in centre of cell and cell fibres pull them apart Membranes then form The Cytoplasm Divides They now have identical cells! 2 of 4 Meiosis! Meiosis Gametes ( Sex Cells) Half the number of Chromosomes 2 Chromosomes join during fertilisation Now have full number of chromosomes New cell is Unique 3 of 4 Cell Division Process- Meiosis Cell Division Process- Meiosis Cell duplicates DNA Chromosomes Line up in centre of Cell Pairs of Chromosomes are pulled apart Mixing up Mother and Fathers Chromosomes Creates Genetic Variation Chromosomes line up and pulled apart 4 gametes made containing half original number of chromosomes. 4 of 4
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