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NT Biology Edexcel B2 Topic 1 Mitosis and Meiosis
Transcript of NT Biology Edexcel B2 Topic 1 Mitosis and Meiosis
Know the difference between mitosis and meiosis
Describe the process of mitosis
Describe the process of meiosis Questions:
What did you notice about the cells that grew?
Was there a difference between cancerous and normal cell growth? Definitions game - get up off of your seat Most cells of your body are diploid (contain two sets of 23 chromosomes)
These cells divide using a process called mitosis
This process produces two daughter cells that are genetically identical to the parent cell
Mitosis is used for growth or to replace damaged cells SEX This is not always necessary!! Many organisms reproduce by a process called asexual reproduction. The organisms cells reproduce by the process of mitosis. sexual reproduction produces a new individual.
This requires two sex cells (one from the male and one from the female) called gametes.
Gametes are haploid (only one set of chromosomes) and fuse during fertilisation to form a zygote.
Gametes are made during meiosis. Task: Use pages 40-41 to summarise the simalarities and differences between mitosis and meiosis Show what you know: Complete the round the clock activity