The differences between sex and gender

The following elements are important in a short academic paper:

A title page
Introduction including an Objective and Thesis 
At least three body paragraphs
Conclusion

Write a three page essay (double-spaced 12 font) on the differences between sex and gender.  How does society construct gender categories from birth?  Be critical in your response.

Provide a bibliography page.  Show you can reference material using APA format.  Check the Library website on citing sources.