What are the unequal and even harmful genders in the traditional gender role model?

Different meaning. Gender role is a kind of behavior and thinking mode defined by gender in sociology. Its formation in animals is mainly related to the physiological characteristics of species and gender. From the perspective of phylogeny, the embryonic form of gender role differentiation can be seen in the animal kingdom. For example, most birds are hatched by females, and males feed or guard by nests. With the development of society, the behavior pattern of gender roles evolves with the changes of social culture and social division of labor between men and women. Gender refers to the difference between men and women; Myxomycetes have more than 500 genders, Tetrahymena has 7 genders, and even some strains of birds, such as emus, have 3 genders, which can be induced artificially. Human beings mainly refer to the differences between men and women.