Molecular Alterations in Gamete Surfaces During Fertilization and Early Development

摘要: Publisher Summary This chapter discusses the molecular alterations in gamete surfaces during fertilization and early development. The events of involve many changes at both gametes. acrosome reaction sperm is an absolute requirement for fertilization. gametes perform activities characteristic specialized cell types. movement ions as it undergoes reminiscent phenomena excitable cells, such muscle nerve. that occur sperm, with apparent rapid change membrane permeability to several ions, suggest one first triggering mechanisms may alteration potential cell. Upon fusing egg, does not diffuse rapidly, would be expected from studies other but rather exists a patch throughout egg responds by altering its surface, inserting some 10,000 cortical granules into plasma having concomitant, perhaps related, increase rigidity zone. additionally properties glycocalyx, assembling complex membrane.