I think that many people share your
father's views. However, women have been subjected
to these same criticisms in other professions
-- Fire Fighters, Athletes, Astronauts, etc...
-- and have time and again prove that given
the time and resources they are capable of accomplishing
what men do.
Certainly they aren't the same
-- neither are two men -- but they can reach
the same goals. Perhaps this is the argument
you can use with your father.
Also, there are
other women who have attained these positions
and have succeeded, even excelled and triumphed.
I think using these examples gives you documentation
that you aren't the sole pioneer, but rather
joining others who have also set the path.
I hope that helps and I think it's great
that you are going to continue.