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प्रश्न
Read the following and answer from given below:
Cleavage is the series of rapid mitotic divisions in the zygote and forms blastula. The 2, 4, 8, 16 daughter cells are called blastomeres. An embryo with 64 blastomeres is known as a blastocyst and has a blastocoel cavity. Blastocyst gets implanted in the uterine wall and leads to pregnancy.
At which stage of embryonic development does trophectoderm develop?
पर्याय
Zygote
Morula
Blastula
Gastrula
MCQ
उत्तर
Blastula
Explanation:
Embryo with 64 cells is called blastula (blastocyst) and has a blastocyst cavity. The blastocyst is composed of an outer envelope of cells called trophoblast and inner cell mass.
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