Sex and gender are two distinct things. You might be biologically born female but identify as male, or visa versa, or neither. Or both! Or some other gender. This is called gender diversity.If we go back to biology, males and females are distinguished through their sex organs (that, I'll assume people will not argue since you either have certain equipment or not)
This doesn't make asexual reproduction any less valuable. In addition, plants and other complex organisms are capable of reproducing asexually. In the instances of sexual reproduction, this just means some kind of genetic recombination, usually involving an egg or a sperm. Simply having a male/female role in biological reproduction does NOT necesarily mean that they fall into our human stereotypes of mother=nurturer, or father=breadwinner or whatever -- see the anglerfish, seahorse, and theemperor penguin.Now where there ARE beings in nature that reproduce asexually, they tend to be on what science would classify as "simple"; almost all of them are in the microscopic branch. When you become more complex, that is when you see the male/female dynamic.
Men and women may have some biological differences (how many and how great these differences are is still up for debate), but one should never underestimate the power of "nurture" and cultural upbringing. There is really more variation WITHIN a specific gender than BETWEEN genders.But the pattern of observed behavior and tendencies that are more typical of a particular sex seems to hold pretty consistent, especially considering the change in country, social norms, etc. I believe that is where we derived the "definition" (if you will) of masculine and feminine energy.
My problem with trying to code characterists of humans as "pink" and "blue" is that it puts arbitrary limits on what any one gender can do (a.k.a. sexism). Historically, logic was associated with masculinity -- so is a logical woman more "mannish" and less "womannish"? Is a man who does the childcare in the family more "womanly" and less "manly?" What is even the point of trying say "men do this, women do that"? If one were to say, "Math is a boy thing, boys are good at math; I guess some girls can be good at math, but math is still mostly for boys, not girls" -- how is that not inherently limiting what both boys and girls can do? That's what I don't get about people who consider themselves "humanist" or "equalist" -- if they really believed in full equality of all genders, then why would they continue stereotyping some characteristics and abilities as only the purview of one gender or another (except for some people who are "exceptions" to their gender)? That's not "fixing" sexism, it's perpetuating sexism.