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प्रश्न
How prophase-I of meiosis differs from prophase of mitosis in an essential way? Describe how it affects the daughter cells?
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उत्तर
Prophase-I of meiosis has five sub-stages namely Leptotene, Zygotene, Pachytene, Diplotene, and Diakinesis. In pachytene exchange of genetic material between non-sister chromatids takes place through crossing over and chiasma formation which does not occur in prophase of mitosis. As a result, the daughter cells have a variation in their genetic composition contrary to identical daughter cells of mitosis.
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संबंधित प्रश्न
Differentiate between
Chiasmata and crossing over.
Name the Following
The process is responsible for the variation.
Name the Following
Stage in which the crossing-over takes place.
Give Technical Terms
Crossing over occurs during the third substage of meiosis.
What is terminalization?
What is a tetrad?
What is crossing over?
What is the bouquet stage?
Statement I: Chromosomes become gradually visible under light microscope during leptotene stage.
Statement II: The beginning of diplotene stage is recognized by dissolution of synaptonemal complex.
In the light of the above statements, choose the correct answer from the options given below:
The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?
