Sex Vs Gender. What decides who you are?. Conception. If sex is whether an individual is male or female, then this is decided at conception when a sperm fertilises an egg. A newly formed foetus has the chromosomes that determine whether it will be born a girl or a boy. Is gender the same?.
What decides who you are?
This suggests that gender is fixed like sex, since people who undergo gender re-assignment have not been able to simply adopt the gender role of the sex that they were born.
The Batista Boys