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In: Biology

fertilization process.

fertilization process.

Solutions

Expert Solution

  • fertilization is an important Step in sexual reproduction
  • fertilization is a fusion of male and female gametes
  • fertilization brings variation in offspring by mixing gametes from mother and father
  • Fertilization also is known as generative fertilization, pollination, syngamy, impregnation
  • During Fertilization haploid male and the female gamete, fuse to give diploid organisms
  • Four steps in fertilization
  1. preparation of the sperm Here the ejaculated sperm is not ready to fertilize the egg. to fertilize egg sperm undergoes several changes in the female reproductive system called capacitation
  2. Sperm Egg binding Here sperm get attracted toward egg by some chemical signals when sperm reach the egg the Acrososme of sperm burst called Acrosomal reaction by this sperm penetrates the egg coating for fusion
  3. Sperm egg fusion After penetration sperms fuses its pronucleus to the female nucleus now this structure called zygote which is diploid
  4. Activation The fusion of male and female nucleus causes many chemical responses to take place in the zygote, the first response is to prevent polyspermy, then many growth-related responses started to take place and zygote starts mitotic cell division.

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