Answer:
I believe your answer would be that they were learned
Step-by-step explanation:
There are people who define themselves as a male or female when there actual gender is either male or female. That is called being either "Gender Fluid" or "Transgender" but these are different from each other. Being Transgender is where i believe that the person gets a certain type of surgery to change there physical appearance and being Gender Fluid is where u want to be either a guy when you are a girl and the other way around.
Hope this helps!!
And i hope its not too in depth lol