Trace the development of the zygote up to its plantation in the uterus.

Dear student

Please refer the solution below for the said query
 

• The haploid sperm nucleus fuses with the haploid nucleus of the ovum to form a diploid zygote by fertilisation.
• Mitosis starts as the zygote moves through the isthmus of the oviduct (cleavage) and forms 2, 4, 8, 16 daughter cells called blastomeres.
• The 8−16 cell embryo is called a morula, which continues to divide to form the blastocyst. The morula moves further into the uterus.
• The cells in the blastocyst are arranged into an outer trophoblast and an inner cell mass.
• The trophoblast gets attached to the uterine endometrium, and the process is called implantation. This leads to pregnancy.

Hope this information clears your doubt about the topic.

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