Gender is a range of characteristics of femininity, masculinity and others described as third gender. Depending on the context, the describing characteristics vary from sex to social roles (gender roles) to gender identity. The academic interdisciplinary field gender studies focuses on gender. Sexologist John Money introduced the terminological distinction between biological sex and gender as a role in 1955. Before his work, it was uncommon to use the word "gender" to refer to anything but grammatical categories.
The out of date "woman does the dishes rule" is obsolete now we know man does the dishes now or he'll never sleep with woman and that's not going to be good for the human race. This is why there are hubby classes for men to attend to make more reliable to their spouses. Gender has taught us notorious take each other for granted or there will be no more humans in this world.