Christianity is the only religion that claims that as soon as conception (the egg being fertilized, no heartbeat) it is a human being with a spirit.
Various other faiths (Muslim, Hindu, etc.) have the human spirit entering at various other times (3 weeks after conception, etc.).
The heartbeat thing is also a fallacy. Cell replication is life and so recognized scientifically.
I agree, but no one except a married man can document WHEN that date of conception MIGHT be.