A. During fertilization, a sperm comes in contact with the zona pellucida layer and induces the ...

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A. During fertilization, a sperm comes in contact with the zona pellucida layer and induces the changes in the membrane that block the entry of additional sperm.
B. The milk produced during initial few days of lactation is called Colostrum having antibodies.
C. In human beings, menstrual cycle ceases around 50 years of age. It is called menopause.
D. After one month of pregnancy major organ system are formed.
(a) All are correct
(b) All are incorrect
(c) D is correct
(d) All correct except D
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