WebThe slow block to polyspermy. Which of the following is an important function of intercellular Ca2+ waves in oocytes during fertilization? activation of the pathway that degrades cytostatic factor (CSF), allowing the completion of meiosis II WebMar 18, 2024 · The slow block to polyspermy.A. Triggers the movement of Ca+2 from cytosol to endoplasmic reticulumB. Describe fusion of egg and sperm nucleiC. ... Hint: …
Solved Which statement about blocks to polyspermy in sea - Chegg
WebA. sperm are detached from their receptors B. Ca+2 activate the oocyte to Under normal circumstances in humans only one sperm penetrates the ovum (monospermy). Though several steps apply to this regulation, which step is the key to the slow block to polyspermy? Expert Answer B. Ca2+ activate the oocyte to enter cell division Exp … WebThe slow block to polyspermy in the sea urchin embryo consists of a physical barrier to further sperm penetration into the egg. The physical barrier is the fertilization envelope, … 9毛9西北菜
Polyspermy - an overview ScienceDirect Topics
WebNov 25, 2024 · Slow block to polyspermy occurs later in the cortical reaction and involves receptor clipping. What is slow and fast block to polyspermy? The slow block is used by … WebIn contrast to the fast block of polyspermy which immediately but temporarily blocks additional sperm from fertilizing the egg, the cortical reaction gradually establishes a permanent barrier to sperm entry and functions as the main part of the slow block of polyspermy in many animals. WebNov 25, 2024 · What is the slow block to polyspermy? The slow block to polyspermy in the sea urchin embryo consists of a physical barrier to further sperm penetration into the egg. Cortical granule exocytosis results in the formation of the fertilization envelope (often called the fertilization “membrane”, even though the structure is not a true membrane 9毛一度电