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ZoologyNEET 2019Fertilisation, implantation, pregnancy, parturition, lactation

Human Reproduction

Extrusion of the second polar body from the egg nucleus occurs:

  1. A.After entry of the sperm but before fertilisation✓
  2. B.After fertilisation
  3. C.Before entry of the sperm into the ovum
  4. D.Simultaneously with the first cleavage

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