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Q.
Repulsion of homologous chromosomes takes place in
Chhattisgarh PMTChhattisgarh PMT 2005
Solution:
In diplotene stage, the force of attraction between homologous chromosomes lessen, and they move apart. They do not separated completely but are held together at one or more points called chiasmata. In this, inner two of the four chromatids are involved in exchange of segments called crossing over Recent evidence suggests that a brief period of DNA synthesis may occur when the exchange are taking place.