Gammetes Flashcards
1
Q
why does the ovum have a zona pellucida
A
-it is a protective coating which the sperm have to penetrate in order for fertilisation to occur
-it then hardens after they have entered
-it prevents polyspermy
2
Q
what do cortical granuels do in the ovum
A
releases substances that causes the zona p to harden
3
Q
what do follicle cells do
A
forms a protective coating around the egg
4
Q
what do acrosomes contain
A
digestive enzymes that break down the zona pellucida and allow sperm to penetrate the egg
