“Binary gender” refers to the traditional and oversimplified concept of gender as two distinct, opposite, and disconnected forms: male and female. It’s based on the idea that there are two separate and mutually exclusive categories of gender. In many cultures, these gender roles come with specific expectations, behaviors, and attributes:

• Male: Often associated with masculinity, men, boys, and typically linked to biological attributes such as XY chromosomes, testes, and the ability to produce sperm. Societal expectations might include being strong, assertive, or protective.
• Female: Often associated with femininity, women, girls, and typically linked to biological attributes such as XX chromosomes, ovaries, and the ability to carry a pregnancy. Societal expectations might involve being nurturing, emotional, or passive.

However, it’s essential to understand that the concept of binary gender has been challenged and expanded upon over the years. Many cultures, both historically and presently, recognize more than just these two genders. Additionally, contemporary understandings of gender recognize it as a spectrum, not confined strictly to male and female but encompassing a range of identities, including non-binary, genderqueer, genderfluid, agender, and more.

In the modern context, while the binary gender system still prevails in many areas of society, there’s growing recognition of non-binary and gender-diverse identities, challenging and expanding the traditional binary concept.