[malakhi]

The zygote is a living human person. That's the presumption that needs to be rebutted.

How can I rebut something you are unwilling to define?

[eastsider]

There is no further deconstruction necessary of living human being than there is of living human person. Either the zygote is not alive, not human, or doesn't exist. That's the scope of the rebuttal.

[MHGinTN]

Cleavage is the splitting from the one cell, the zygote. The zygote is not a fertilized egg because the egg (a haploid cell ceases to exist once fertilization has occurred. Do you know what the 'polar body' is?