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Question : Draw a diagram ma tic sectional view of human ovary showin stages of oogenesis along with corpus luteum Where is morula formed in humans? Explain the process of its development from zygote |
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Answer» Solution : Sectional view of human ovary : See Q. 24 , Delhi Board, Set-II,2008. MORULA is formed in the upper portion of oviduct, i.e., isthmus. The haploid nucleus of the sperms and that of the ovum fuse together to form a diploid zygote. Zygote divides rapidly as it moves through the isthmus of the oviduct by mitotic division CALLED CLEAVAGE and as a result 2, 4, 8, 16 daughter cells are produced which are termed as blastomeres. The embryo with 8-16 blastomeres is called a morula. |
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