Tutorial 6 - Meiosis The separation of sister chromatids...

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Biology 2C03: Genetics Tutorial 6 Mitosis, meiosis and aneuploidy Objectives: Identify the differences between two karyotipes Describe the stages of mitosis and meiosis Identify the cell division stage responsible for aneuploidy Outline: In this week tutorial, you will solve a problem related to aneuploidy using your mitosis and meiosis knowledge. Your TA will randomly assign a problem to each group, and you will answer a short list of questions. Your group will present the problem and your responses to the assigned questions. Preparation To prepare for the tutorial you should: Read this Guide Review mitosis and meiosis. For this you should read: Eukaryotic cell reproduction Cell cycle and Mitosis
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Unformatted text preview: Meiosis The separation of sister chromatids and homologous chromosomes Meiosis in animals from " Genetics: a conceptual approach " textbook Chapter. 2 (p. 19-25; p. 27-28; p. 32-35) Take the pre-tutorial 6 quiz posted on Avenue to Learn, under “Quizzes” . Definition: Aneuploidy is a change (increase or decrease) in the number of individual chromosomes. In diploid individuals the more common aneuploid conditions are: - nullisomy, when both homologous chromosomes are lost (2n - 2) - monosomy, when one chromosome is lost (2n - 1) - trisomy, when one chromosome is added to the genome(2n + 1) - tetrasomy, when two homologous chromosomes are added to the genome (2n + 2)...
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