Chapter 8: Mitosis - Cell Division and Reproduction
Chapter 8: Mitosis - Cell Division and Reproduction
Chapter 8: Mitosis - Cell Division and Reproduction
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Gametes have a single set of chromosomes<br />
Humans have two sets of chromosomes, one<br />
inherited from each parent.<br />
• Diploid <strong>Cell</strong>s: <strong>Cell</strong>s whose nuclei contain two<br />
homologous sets of chromosomes (2n).<br />
Somatic cells are diploid (almost all cells in our body).<br />
In humans the diploid number (2n) is 46.<br />
• Haploid <strong>Cell</strong>s: <strong>Cell</strong>s whose nuclei contain a single<br />
set of chromosomes (n).<br />
Gametes are haploid (egg <strong>and</strong> sperm cells).<br />
In humans the haploid number (n) is 23.<br />
Fertilization: Haploid egg fuses with a haploid<br />
sperm to form a diploid zygote (fertilized egg).
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