i can understand wanting a girl if you have a house full of boys,
i also understand the genetics and conditions situation, my dad is partially sighted and its an inherited condition, his sisters lad is worse alot worse can hardly see,

we thoguht that it would be inherited through the females, so when i had rich he was tested a lot for it, but he is fine. it appears the female is the carrier so my female cousin if she has a boy he will be blind, its not life threatening, but is difficult condition to live with, i see how my dad and cousin struggle at times.