|
of
fertilization?
2. What ensures that eggs are fertilized only by sperm of
the same species
(species-specificity)?
3. What might happen if an egg were fertilized by more than
one sperm
(polyspermy)?
4.What is the fast block to polyspermy?
5. What causes the cortical reaction?
6 How could you confirm that all of the necessary
Ca+2comes
from internal
stores?
7. What is the slow block to polyspermy?
8. The fertilization membrane is anchored to the plasma
membrane by protein
"posts". Proteases from the
cortical granules cleave the posts allowing the
fertilization membrane to
elevate. What would be possible consequences of
inhibiting this protease
activity?
9. What
other changes are triggered in the
eggby the increase in
Ca+2
concentrations in the
cytoplasm?
|
1 2
3 4
5 6 