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NEET2004ZoologyPrinciples of Inheritance and VariationActual

Crossing over that results in genetic recombination in higher organisms occurs between:

Options

  1. Asister chromatids of a bivalent
  2. Bnon-sister chromatids of a bivalent
  3. Ctwo daughter nuclei
  4. Dtwo different bivalents.

Correct answer

B. non-sister chromatids of a bivalent

Step-by-step solution

Crossing over is the exchange of chromosomal segments between non-sister chromatids of homologous chromosomes during the production of gametes. It occurs during pachytene stage. (Ref. to Fig. 28.4)

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