Multiple choice

Chiasmata are formed

  1. due to crossing over of some part between homologous chromosomes

  2. due to crossing over of some part between non-homologous chromosomes

  3. due to duplication of homologous and non-homologous chromosomes

  4. due to loss of some part of chromosomes

  5. none of the above
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A Correct answer
Explanation

Chiasmata are the visible X-shaped structures formed when non-sister chromatids of homologous chromosomes exchange genetic material through crossing over during prophase I of meiosis. This process creates genetic variation.

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