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Fertilization

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  • 1. Fertilization is the process by whichmale and female gametes fuse.
  • 2.  ampullary region of the uterine tube
  • 3.  Freshly ejaculated Spermatozoa unable to fertilize the oocyte it undergo 2 changes  to fertilize the ova (a) capacitation (b) acrosome reaction
  • 4.  ``Capacitation is a period of conditioning in the female reproductive tract``  lasts approximately 7 hours.  occurs in the uterine tube  Much of this conditioning, entails epithelial interactions between the sperm and mucosal surface of the tube.  During this time, a glycoprotein coat and seminal plasma proteins are removed from the plasma membrane that overlies the acrosomal region of the spermatozoa.  Only capacitated sperm can pass through the corona cells and undergo the acrosome reaction.
  • 5. www.kfmc1.com
  • 6. www.kfmc1.com
  • 7. 1. Restoration of the diploid number of chromosomes.2. Determination of the sex of the new individual.3. Initiation of cleavage.4. Trasportation of gentic features of parentes. www.kfmc1.com
  • 8. The Acrosomal ReactionCaused by interaction of the sperm with molecules of the zona pellucida Interaction between sperm and egg is species specific