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Mitosis vs. Meiosis. Meiosis Mitosis Based on the diagram, The difference between mitosis and meiosis is that mitosis produces two identical daughter.

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Presentation on theme: "Mitosis vs. Meiosis. Meiosis Mitosis Based on the diagram, The difference between mitosis and meiosis is that mitosis produces two identical daughter."— Presentation transcript:

1 Mitosis vs. Meiosis

2 Meiosis Mitosis

3 Based on the diagram, The difference between mitosis and meiosis is that mitosis produces two identical daughter cells and meiosis produces four genetically different daughter cells

4 Parent cell Diploid (2n) Daughter cell Diploid (2n) Daughter cell Diploid (2n) Parent cell Diploid (2n) 1 st division Diploid (2n) 2 nd division Daughter cell Haploid (n) 2 nd division Daughter cell Haploid (n) 1 st division Diploid (2n) 2 nd division Daughter cell Haploid (n) 2 nd division Daughter cell Haploid (n)MitosisMeiosis

5 The numbers The numbers The cells created from mitosis are diploid or 2n.The cells created from mitosis are diploid or 2n. The cells created from meiosis are haploid or nThe cells created from meiosis are haploid or n Definitions: Diploid (2n) – two of each type of chromosome (in homologous pair – carry the same trait)Diploid (2n) – two of each type of chromosome (in homologous pair – carry the same trait) Haploid (n) – one of each type of chromosomeHaploid (n) – one of each type of chromosome

6 Let’s try it… Human cells have 46 chromosomes.Human cells have 46 chromosomes. Therefore, the diploid number (2n) of chromosomes in humans is 46.Therefore, the diploid number (2n) of chromosomes in humans is 46. The haploid number (n) of chromosomes in humans is 23.The haploid number (n) of chromosomes in humans is 23.

7 The reason why: mitosis To replace other cells that have been damaged or worn outTo replace other cells that have been damaged or worn out To allow multicellular organisms to growTo allow multicellular organisms to grow For asexual reproductionFor asexual reproduction Because they get too big!Because they get too big!

8 The reason why: meiosis Meiosis results in four cells with half the number of chromosomes so that when the sex cells (sperm and egg) combine, the original or normal number of chromosomes will be restoredMeiosis results in four cells with half the number of chromosomes so that when the sex cells (sperm and egg) combine, the original or normal number of chromosomes will be restored

9 One last thing… [the] where? Mitosis occurs in normal body cells (i.e. skin cells), and meiosis occurs in sex cells (i.e. sperm and egg) only.

10 The verdict

11 Lets see mitosis and meiosis in action!


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