Males are goofy when it comes to their sons. They want their 'son" to follow in his footsteps as far as geeing married, having kids keeping the bloodline going. They are also generally proud of their sons, but treat them differently in some circumstances.
Just as an example, when I came out to my family, they did pretty well with, but just before leaving to go off to college, I started to give him a hug and he backed off and said "men don't hug, they shake hands". That is not entirely true, there are times when a hug between men is appropriate.
If the child a a cis xx, fathers tend to get very protective and even the most open minded fathers will treat a girl differently than a boy. Not all, but a lot.
I think parents have dreams for their children, like being successful and getting further in life than they did. If they have had their hearts set on having a son, its hard for them to understand and there is some denial at first. You might want to check over the net for experiments regarding transgenders. Then its not just you. If there are experts who think its neurological, of some other reason, show them to your father. Its hard to dispute opinions from the "experts".
sam1234