I found this interesting because it makes a good point. In America, people tend to say the female sex qualifications involve the identification of breasts. However, young adolescents do not have breasts until puberty, and even then, breasts don't always form for all females. Does that make them less female for lacking a certain quality that ties them to their sex?

This part of the passage is almost, if not exactly criticizing the viewpoint of this concept. It states the fact that the sex-gender binary and nature-nuture/culture binary isn't considering the outside viewpoints of what sex and gender are across different cultures and enviorments. That they aren't considering that there might not be a definite universal way of viewing gender.

Though I'm not sure this counts as a valid bias annotation; I can identify that two biases are being addressed. It is talking about two concepts of sex and gender. One group believes in a more conservative way of viewing the topic, in which there are only two possible sexes and that male qualities are valued over females. While the other view explores a more open-viewed way of seeing the concept of sex and gender across different variations.