This isn't applicable for every case.In some cases it has been also seen that parents give equal value to their daughters as they give to their son but in some cases the parents dont like girls to go out without elders as they have the fear that a girl can be harmed anyway...
Nowdays its rarely seen like that because Parents are educated and broadminded. They give equal oppurtunities, chances, motivation, inspiration, encouragement to both girls and boys equally. But now also in some parts of our country, girls are treated unequally and are not given same status as boys. This thing is still prevallent in our country because uneducated people feel girls aren't trustworthy and one more reason is protectiveness and they don't even realise this protectiveness is turning very much over protectiveness.

Hope it helps!!!!!!!!!!!!