Mitosis and Meiosis
Compare and Contrast
Type of cells produced:
• Mitosis : somatic
• Meiosis: gamete
Number of daughter cells
• Mitosis = 2
• Meiosis =4
Compare and Contrast
End results
• mitosis: 2N  2N diploid  diploid
• Meiosis: 2N  1N diploid  haploid
Sexual or asexual
• Mitosis = asexual
• Meiosis = sexual
Compare and Contrast
Genetic diversity or identical cells
• Mitosis = identical cells
• Meiosis = genetic diversity
Events of anaphase
• Mitosis = sister chromatids separate
• Meiosis 1 = homologous chromosomes
• Meiosis 2 = sister chromatids
Compare and Contrast
Replication and when
• Mitosis = yes
interphase
• Meiosis = yes
interphase 1
Chromosome number
• Mitosis = 46  46
• Meiosis = 46  23
Compare and Contrast
Nucleus dissappears
• Mitosis = prophase
• Meiosis = prophase 1
Nucleus re-appears
• Mitosis = telophase
• Meiosis = telophase 2
Compare and Contrast
When process begins
• Mitosis = from fertilization all throughout life
• Meiosis = puberty
Total number of nuclear divisions
• Mitosis = one
• Meiosis = two
Sperm/ova/both/neither
Polar bodies = ova
Tail and can swim = sperm
Diploid number of 46 = neither
Formed by meiosis = both
One cell much smaller = ova
Called somatic cells = neither
Contains haploid chromosome number = both
Four total cells = both
Number of chromosomes
Organism
Somatic
Gamete
Horse
60
30
Housefly
12
6
Dog
78
39
Grasshopper
14
7
Apple
34
17
Vocabulary
1.
2.
3.
4.
5.
6.
7.
Puberty
Ovaries
Apoptosis
Cloning
Benign
Testes
Differentiation
Vocabulary
8. Gametogenesis
9. Malignant
10. Fertilization
11. sister chromatids
12. stem cell
13. cancer
14. chromosomes