When the sperm cell penetrates the egg cell, it transfers a copy of it’s genes to the egg where they are paired up with their matching genes in the egg.
At that moment everything you will ever be is there encoded in those DNA strands in the genes.
Yes. DNA experts in criminal trials testify that your individual DNA begins at conception.
I predict scientific research someday will force a reversal of Roe v. Wade changing it from the right of the mother to the right of the child.