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Briefly explain events of fertilization and …

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Briefly explain events of fertilization and implantation in human female.

Posted by Suhani Choudhary 4 years, 7 months ago

CBSE > Class 12 > Biology

2 answers

Sameer Chaudhary 4 years, 7 months ago

(a) Fertilization : Sperm comes in contact and enters the secondary oocyte. Activates/induces secondary oocyte to complete meiosis II leads to formation of ovum/ootid. The haploid nucleus of sperm and that of ovum fuse to form a diploid zygote completing the process of fertilization. Implantation: Trophoblast layer of blastocyst attaches to the endometrium (of the uterus). The uterine cells divide rapidly and cover the blastocyst. The blastocyst becomes embedded in the endometrium and the implantation is completed. (b) hCG (human chorionic gonadotropin) hPL (human placental lactogen) estrogen progestogens

Sameer Chaudhary 4 years, 7 months ago

Isko point wise define kiyaa gyaa h

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