Which of the following is not a layer that the sperm has to encounter before reaching the egg nuclei?
A. Zona pellucida
B. Corona radiata
C. Perivitelline space
D. Zona radiata
Answer:D
Which of the following is not a layer that the sperm has to encounter before reaching the egg nuclei?
A. Zona pellucida B. Corona radiata C. Perivitelline space D. Zona radiata