Kinsey rated people's sexual preference from 1 to 6 with 1 being totally straight (including fantasies) and 6 being totally gay.
Harry Benjamin used a similar scale, 1 being an "Alpha Male" for men and a 6 being a transsexual who is likely to become suicidal or self-destructive if they don't transition.
Alpha males have very high degrees of testosterone, are highly aggressive, and very much like being in control of everything. The don't tolerate lack of respect and will fight when confronted or challenged. These are usually the men who will either become very aggressive with a loud low booming voice in the meeting, or will make very quiet and direct threats. This is common behavior among all mammals, with Alpha males taking control, becoming leaders, and bullying any who dare to challenge him. In some mammal groups, such as lions and wolves, a new Alpha male will kill the cubs of the previous Alpha. Many demand exclusive breeding rights over ALL of the women.
Within primates, there are Alpha males as well, but there are also Beta males, those who have accepted their lower status and submit to the Alpha. They often help raise the children, they engage in grooming, and because of their kindness to the other females, often get the chance to breed covertly.
Human evolution has lead to even more prominent roles for the Beta male. Beta males are often the intellectuals, scientists, engineers, bankers, and medical professionals. Early beta humans were probably the first witch doctors, healers, and herbalists. They could use their knowledge of herbs, poisons, and cures to make an abusive Alpha very sick, then heal him. Often these medicine men had been too small and weak to hunt, so they gathered with the women, yet still had the desire to be in control of their destiny.
Then there were the omega males. These were the "runt of the litter". Often, they survived by entertaining the rest of the pack or troupe. Careful observation has shown that Omega male wolves, apes, and humans often survive by clowning, entertaining, being almost absurdly subservient and submissive. In the theater, women's roles were often played by frail and skinny young men. Often singers were castrated at a very young age so they could portray women in the Opera. The infamous Don Giavanni was actually based on the true story of a Castrati who was also known as the greatest lover of his day, probably BECAUSE he didn't need to be satisfied sexually in the same way as most men.
Often, type 6 transsexuals are viewed as omega males, but much like Giovanni, they have their strengths as well. Many type 6 transsexuals absolutely hate being male, many have tried to mutilate themselves, crushing or otherwise damaging their testes. There are even cases where a type 6 transsexual has tried to castrate himself. Some have even gone to veterinarians to be castrated or gelded.
In the 1950s and 1960s, type 5 and type 6 transsexuals were often given electric-shock to "deprogram" them. Some were even tortured in "aversion therapy". Most needed the last resort, a Lobotomy. It was considered more medically acceptable to destroy a transsexual's brain than to remove his/her testicles.
Perhaps one of the reasons that there are so many beta and omega males is because so many Alpha males were killed off in the centuries of wars. Often, young Alpha boys would begin training as soldiers as soon as they could hold a wooden sword. They learned to attack, to perry, to hold the shield, and to inflict pain. This was easy when half the boys in town were beta or omega males and could easily be beaten. Fighting between Alphas was more fierce, but still not fatal. Unfortunately, once they were old enough to be chosen as soldiers, they were eager to go to war, and often eager to take the field among the ranks, often seeking the front line. Many only lasted seconds, others lasted a few minutes. The few who survived more than an hour had quickly lost their taste for hand-to-hand combat, and even those who survived the battle often gained rank, enabling them to choose a more strategic position, one less prone to risk. Of course, they would tell their tales of the hundreds that he killed on his worst day, being careful NOT to tell them how many of his friends and neighbors were being killed around him. After all, he needed troops who were eager to stand at the front line, so he would never have to do it again.
Meanwhile, the beta and omega boys usually kept their distance. Shooting arrows or slinging rocks. Some were so small and light they were only useful as messengers and couriers. This of course, gave them a keen insight into how battles were REALLY won, making it possible for them to advise generals as "Wizards" or "Wise men". Often, these wise men would also know poisons to make arrows more deadly, ways to use and accelerate fire, causing more damage. Many designed engines of war that they themselves could never have used, but could easily be used by a team of beta soldiers. Eventually we had deadly gas and germ warfare in world war 1 and atomic bombs in world war 2, and hydrogen bombs capable of killing every living person in a city the size of Tokyo or New York in just a few hours.
The result has been that Beta and Omega men have become more common, have bred, creating offspring who are more "feminine" than their Alpha counterparts.
By the same token, we have seen the emergence of women who are more violent and aggressive. In urban areas, many of the men have been taken off to jail, meaning that women have to protect themselves, their children, and their property. They are often more aggressive, more bossy, more violent, than their suburban sisters. These "Alpha Women" actually may have evolved in the western frontier of the United States. Often, women came over with their husbands and brothers to homestead. They had to cook, but they also had to help plow the fields, chop the wood, fetch the water, dig the well, and herd the animals. Often they were bigger and stronger than many of the men in the nearest large town near the railroad station. My great grandmother had thighs that were almost 30 inches around and pure muscle, and arms that were also large and muscular - from chopping wood and fetching water all those years. According to one story, she threw a man about 20 feet into a horse trough and told him that if he touched her again, his next landing wouldn't be so gentle.
These strong and powerful women, as well as the softer and gentler men, have blurred the lines between "masculine" and "feminine". This is probably a good thing. Imagine a city of 14 million people where all of the men were Alphas, violently attacking each other at the slightest provocation. Imagine all of those women being helpless and submissive to all those Alpha men, becoming widows and making their children orphans, depending on the next Alpha male who wanted them sexually. In some cities like San Francisco, there would be hundreds of minors and the only women in town were prostitutes. And even these women had to be ready to pull a derringer when the need arose.
