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Answer:

  • Zygote is formed by fusion of 23 chromosomes from female and 23 chromosomes from male
  • This fusion happens through a process of fertilization to form an egg
  • The human zygote consist for 46 chromosomes and is diploid in nature
  • During the process of fusion,the sperm combines with the membrane of the ovum
  • Later the zygote is formed and become activated for the cell division for the formation of embryo
  • Embryo is form by undergoing different stage of development namely :-

1)morula

2)blastula

3)gastrula

The organization of the  genes inside of the zygote are as follows:

  • The genes from both parents fuse in the zygote and produce an embryo

The zygote is formed when the chromosomes from the male and female organisms comes together, twenty three each and when this happens, there is a period of fertilization which produces an egg.

Furthermore, the spermatozoa combines with the ovule of the female which contains her eggs and then undergo cell division where the parent cells form a single daughter cell and the embryo is formed.

The different stages which the embryo undergoes is known as:

  • Morula
  • Blastula
  • Gastrula

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