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Origin of Eukaryotic Cells
I. Introduction II. Predatory Origins III. Evolution through Symbiosis IV. Different Ways of Life V. Conclusion
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Activation of Egg Metabolism in Sea Urchins
Introduction Fertilization is a crucial step in animal development that initiates the processes that lead to development. The events that occur during fertilization happen in the cytoplasm and involve the release of calcium ions. Calcium ions play a vital role in activating the egg’s metabolism and initiating development by releasing inhibitors from maternally stored messages,…
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Cortical Granule Reaction (Sea Urchin)
Introduction Role of Calcium in Initiating the Cortical Granule Reaction Visualizing Calcium Release Conclusion
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Fusion of the Egg and Sperm Cell Membranes and Polyspermy (Sea Urchin)
I. Introduction II. Fusion of Sperm and Egg Cell Membranes III. Monospermy IV. Polyspermy V. Fast Block to Polyspermy VI. Slow Block to Polyspermy VII. Conclusion
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Recognition of the Egg’s Extracellular Coat (Sea Urchin)
Introduction Species-specific Recognition Events Binding of Sperm and Egg Biochemical Studies on Bindin Evolution of Gamete Recognition Proteins Conclusion
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