Assertion: sperm | /r/CapableOf | penetrate egg
Facets:
Source sentences:
text: When a sperm penetrates an egg, a zygote is formed.
text: Typically only one sperm out of these millions will penetrate the egg, though rarely more than one sperm will manage to penetrate it.
text: This, in turn, allows the sperm cell to penetrate and enter the egg for fertilization to take place.