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5.2 Cell Division

  • Do you understand that mitosis produces two cells which contain identical sets of chromosomes?
  • When does mitosis occur?
  • Do you understand that division of a cell by meiosis produces four cells, each with half the number of chromosomes, and that this results in the formation of genetically different haploid gametes?
  • Do you understand that random fertilisation produces genetic variation of offspring?
  • Do you understand that variation within a species can be genetic, environmental, or a combination of both?

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You make enough cells for a new hand every 7 weeks, if you don’t believe me, watch the video below on cell division.

Click here to see a simple explanation of mitosis by Tim and Moby.

Click here to see how a cell divides by mitosis.

Click here to learn more about the process of mitosis with this detailed animation.

Click here to read more about the human characteristics controlled purely by our genes.

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Extension material

*Click here to see how DNA replicates before a cell divides by mitosis in order for the two new cells to have one full set of chromosomes each.

*Click here to see a detailed animation of meiosis.

*Click here to see a detailed comparison between mitosis and meiosis.

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