Exposure to an increased concentration of which ion(s)stimulates the cortical reaction during fertilization?

Question

Quizplus · Accepted Answer

The exposure to an increased concentration of Ca⁺⁺ ion stimulates the cortical reaction during fertilization. This increase in Ca⁺⁺ ion concentration triggers cortical granules to fuse with the plasma membrane of the egg, leading to the formation of a fertilization envelope that prevents polyspermy. The other ions listed (Na⁺, H⁺, K⁺) do not have a significant role in the cortical reaction.

Exposure to an Increased Concentration of Which Ion(s)stimulates the Cortical