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प्रश्न
Differentiate between
Chiasmata and crossing over.
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उत्तर
| Chiasmata | Crossing Over |
| It is the part of the attachment of non-sister chromatids of homologous chromosomes where crossing over takes place. | It is exchange of genetic material between non-sister chromatids of homologous chromosomes. |
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संबंधित प्रश्न
Define the following:
Chiasmata
How prophase-I of meiosis differs from prophase of mitosis in an essential way? Describe how it affects the daughter cells?
Explain the Term Diplotene
Name the Following
The process is responsible for the variation.
Name the Following
Stage in which the crossing-over takes place.
What is a tetrad?
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:
Match List I with List II.
| List I (Sub Phases of Prophase I) |
List II (Specific characters) |
| A. Diakinesis | I. Synaptonemal complex formation |
| B. Pachytene | II. Completion of terminalisation of chiasmata |
| C. Zygotene | III. Chromosomes look like thin threads |
| D. Leptotene | IV. Appearance of recombination nodules |
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?
