NEET Biology question
Some important events that take place during fertilization are given below. Arrange the events in the proper sequence and select the correct option. (i) Cortical reaction (ii) Sperm entry (iii) Karyogamy (iv) Acrosomal reaction
Answer: (A)
Solution
The acrosomal reaction (iv) occurs first, releasing enzymes that let the sperm penetrate the egg's coats; this is followed by sperm entry (ii) into the ooplasm; sperm entry immediately
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