Our Heavenly Father has blessed us with the opportunity to come to Earth and live in a family. Marriage between man and woman is the only marriage ordained by God. We know that both the man and woman have specific gender roles that contribute to the overall picture. Listed below are a couple gender roles:
Girls 
1.) Relationship oriented
2.) Cooperative play
3.) "White matter"
4.) Nurture
5.) Sensitive/Emotionally expressive

Boys
1.) Agressive
2.) Mechanically minded
3.) Spaciously oriented
4.) Physical strength
5.) Competitive play
6.) "Grey matter"
7.) Provide, protection, preside

Here's a question that my Professor asked us: "What would Heavenly Father want us to do with these gender differences?"