This status is influenced by the person's genes and shown by the anatomical makeup of the person. At conception, an individual's genetic sex is determined, and those genes that represent either male or female sexual anatomy begin to develop. A female fetus will develop ovaries, uterus and vagina.
Gender is characterized by femininity and masculinity.
Those characteristics include the traits, behaviors and roles that a culture believes is appropriate for one sex or the other. For instance, our culture typically believes boys should wear pants and play with masculine toys, be assertive in play, and like outdoor activities. Girls, on the other hand, are expected to like more feminine clothing, enjoy playing with dolls, usually indoors, and be more passive in play. These characteristics refer to gender and are assigned based on anatomical sex. So, sex refers to anatomy and gender refers to behaviors and preferences that are associated with a particular anatomy.