[Yaelle]

You are essentially the same person genetically from conception until you die

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Not fully true at all. The study of epigenetics shows that the same embryo would have different phenotypes depending upon the carrier ( uterus). The uterine environment does have an effect on which genes are chosen. It’s a fascinating thing.

[Popman]

Ok so my sttement is still true unless you implant from one women to another......Plus the baby still has the same chromosomes make up from both parents

[Mrs. Don-o]

What you're saying is true, when it comes to phenotype and gene expression or suppression: the on/off switches. But the statement is still true that you're still the same "person" at every age: zygote, embryo, fetus, neonate, toddler, tweener, teen, or even a geron like me. This is using "person" to mean an identifiable entity with its own life processes, who is a member of the human species.

These processes involve changes every day, or I could even say every minute. But no such change of aggregate of changes negates "personhood" as a category cmprising every man, every woman and all their offspring. Even twinning can be conceptualized in a way that demonstrates the continuity of person.