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NEET 2022, Biology Q14: Chromosomes and Genes

NEET2022Biology
Q.

The appearance of recombination nodules on homologous chromosomes during meiosis characterizes :

  1. A

    Synaptonemal complex

  2. B

    Bivalent

  3. C

    Sites at which crossing over occurs

  4. D

    Terminalization

Solution

Recombination nodules are dense proteinaceous bodies that appear along the synaptonemal complex during pachytene of meiotic prophase I.

They mark the precise locations where enzymes carry out recombination, that is, where crossing over between non-sister chromatids of homologous chromosomes takes place.

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