Question

    Chiasmata formation takes place during which stage of Prophase I?

    A Leptonema Correct Answer Incorrect Answer
    B Zygonema Correct Answer Incorrect Answer
    C Pachynema Correct Answer Incorrect Answer
    D Diplonema Correct Answer Incorrect Answer

    Solution

    Chiasmata formation takes place during Diplonema or Diplotene stage of Prophase I. At this stage  further  thickening  and  shortening  of chromosomes takes place. Homologous chromosomes start separating from one another (points of contact are known as chiasmata). Separation starts at the centromere and travels towards the ends (terminalization).

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