![PDF) Mammalian membrane block to polyspermy: New insights into how mammalian eggs prevent fertilisation by multiple sperm PDF) Mammalian membrane block to polyspermy: New insights into how mammalian eggs prevent fertilisation by multiple sperm](https://www.researchgate.net/profile/Janice-Evans-2/publication/7297612/figure/fig1/AS:277674795782146@1443214238535/figure-fig1_Q320.jpg)
PDF) Mammalian membrane block to polyspermy: New insights into how mammalian eggs prevent fertilisation by multiple sperm
![Possible mechanism of polyspermy block in human oocytes observed by time-lapse cinematography | SpringerLink Possible mechanism of polyspermy block in human oocytes observed by time-lapse cinematography | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs10815-012-9815-x/MediaObjects/10815_2012_9815_Fig4_HTML.gif)
Possible mechanism of polyspermy block in human oocytes observed by time-lapse cinematography | SpringerLink
![Ion channels and signaling pathways used in the fast polyspermy block - Wozniak - 2020 - Molecular Reproduction and Development - Wiley Online Library Ion channels and signaling pathways used in the fast polyspermy block - Wozniak - 2020 - Molecular Reproduction and Development - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/66c22599-705f-422e-b5de-9d9d334836a2/mrd23168-fig-0001-m.jpg)
Ion channels and signaling pathways used in the fast polyspermy block - Wozniak - 2020 - Molecular Reproduction and Development - Wiley Online Library
![Polyspermy is normally prevented by(a) The fertilizing and anti fertilizing reaction(b) Repulsion of the excess number of sperm by ova(c) The inability of some sperm to penetrate ova(d) Formation of the fertilization Polyspermy is normally prevented by(a) The fertilizing and anti fertilizing reaction(b) Repulsion of the excess number of sperm by ova(c) The inability of some sperm to penetrate ova(d) Formation of the fertilization](https://www.vedantu.com/question-sets/22b85d03-db32-45fe-a71d-879c9b9d53107421223106892711716.png)
Polyspermy is normally prevented by(a) The fertilizing and anti fertilizing reaction(b) Repulsion of the excess number of sperm by ova(c) The inability of some sperm to penetrate ova(d) Formation of the fertilization
![SOLVED:The fast block to polyspermy in sea urchins (a) is a depolarization of the egg plasma membrane (b) requires exocytosis of the cortical granules (c) includes the elevation of the fertilization envelope ( SOLVED:The fast block to polyspermy in sea urchins (a) is a depolarization of the egg plasma membrane (b) requires exocytosis of the cortical granules (c) includes the elevation of the fertilization envelope (](https://cdn.numerade.com/previews/46c7625c-2382-4a6c-b34b-f238e1c6e714_large.jpg)