Assertion: zygote's cell | /r/CapableOf | come into existence
Facets:
value: upon sperm-egg fusion
type: TEMPORAL
Source sentences:
text: Therefore, in considering the question of when a new human life begins, we must first address the more fundamental question of when a new cell, distinct from sperm and egg, comes into existence.
text: What is the nature of the new cell that comes into existence upon sperm-egg fusion?