Not really. At conception a unique person's DNA is formed. That is a fact.
The scientific fact is that at the moment of conception, a unique strand of DNA is formed. This is the start of a human life. It is human DNA and it is alive.
You, myself, everyone here started life at that point. Had you, myself, or anyone else her been ‘terminated’ at that point, we would be dead.
This cell, the fertilized egg, is unlike any cell in the mother’s body. You can not compare it to any other cell in the mother’s body because its DNA is different. It is the DNA of a unique individual. This cell is also different from the mother because it is dividing and growing. It continues to divide and grow until a person gets out of puberty.