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In: Biology

Part I: Mitosis Where are the chromosomes during metaphase? What happens to the nuclear envelope during...

Part I: Mitosis

  1. Where are the chromosomes during metaphase?
  1. What happens to the nuclear envelope during prophase? What happens to actual chromosomes in prophase?
  1. When do the nucleoli disappear?
  1. When do the nucleoli reappear?
  1. How is cytokinesis different in plants and animals?
  1. What is the result of mitosis?
  1. What cytoskeletal structure makes up the spindle apparatus?
  1. Does the ploidy level of the cell change because of mitosis?
  1. What is the function of the centromere?
  1. As our cell has centrioles, what type of cell are we modeling?
  1. Which type of cytoskeletal element is involved in cytokinesis?
  1. What is the purpose of mitosis in humans?

Part II: Meiosis

  1. Do sister chromatids or homologs separate in Anaphase I?
  1. How is Prophase I different from prophase II?
  1. After which step are the cells haploid?
  1. Are the four cells resulting from meiosis genetically identical?
  1. What processes in meiosis contribute to genetic variation?
  1. What is the purpose of meiosis in humans?
  1. Where in humans does meiosis occur?
  1. Are the cells resulting from meiosis haploid or diploid?

Solutions

Expert Solution

  • Where are the chromosomes during metaphase?

Answer- Chromosome in metaphase are aligned at the metaphase plate.

Mitosis can be divided into four stages- Prophase, metaphase, anaphase, and telophase. Prophase is the stage during which chromosome condense, During metaphase, chromosome align at the metaphase plate During Anaphase, the chromosome align they move towards opposite poles. In telophase, the chromosome reaches the opposite poles.

  • What happens to the nuclear envelope during prophase? What happens to actual chromosomes in prophase?

Answer- Nuclear envelope disappear during prophase. The actual chromosome becomes visible during prophase, as they condense.

  • When do the nucleoli disappear
  • Answer- Prophase
  • When do the nucleoli reappear?
  • Answer- Telophase

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gladiator answered 4 months ago
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