I over simplified it a bit for brevity's sake (another thing i'm working on
).
There are times and places to express a more pure Yang attunement or Yin attunement in interaction with others. But generally speaking, balancing and blending is more preferable.
Re: DNA, my understanding is that DNA isn't inherently male or female, but does control or strongly influence chromosomatic expression which does relate to gender. I also think that our consciousness can influence DNA and the latter some too.
Regarding He/She, i'm about 99% certain that the identity of that person is none other than Yeshua. It seems that Bob was almost anti-religious for awhile, but for some reason, at some mid to latter point in his life, he became interested in finding out more or perhaps more accurately corroborating data, on the historical figure--Yeshua (Jesus).
He had his then friend at one point, Joe McMoneagle, do a remote viewing session on a target in an envelope according to Joe. Joe picked up pretty fairly quickly that the target was Jesus (which it was). Interestingly, some of the info from that session correlates with info that Cayce's guidance gives about him both physically and spiritually. Physically that Yeshua had reddish colored hair, and that this being has incarnated a number of times for the purpose of influencing humanity in a positive/spiritual way.
Interestingly, Joe did not remain conscious to the session. I think the info he was picking up on, was so far faster vibrating than what he was used to attuning to, his conscious personality self had to "click out" so to speak, and he couldn't remember much of anything of the session, except that this larger being that Jesus was connected to and was, had a deep sense of joy. (Similar to Edgar Cayce and how he rarely could remember the contents of a reading).
To me, Yeshua has little to do with religion, and is way beyond religion. I didn't come to him through religion. Unfortunately though, most put him a box of religion.
Anyways, if He/She does happen to be Yeshua, then He/She is only a blend on a consciousness level, as according to Cayce's guidance and the Shroud of Turin info, Yeshua had a fairly masculine physical form.
So the physical need not reflect or harmonize with the consciousness for this to work.
There was a time in humanity's earlier development when it did more so, but that time was when what we perceive as matter was less "set" and more fluidic than now--closer to the level that some call and label the "etheric". This is in various sources, but Cayce's guidance talks a lot about it.
According to Cayce's own past life readings about his and his Twin Soul's Soul history, at one point he and his twin Soul were still One in spirit/mind/body, and incarnated in one of the last true androgynous forms in late, near end of Atlantis period (some 14,000 years ago)--and like the earlier versions/incarnations of these more "godlike" androgynous beings, had more creative abilities and direct mind/consciousness control of the physical.
To my knowledge, none of these earlier forms of humans have been found or at least not publicly discussed, so i have to remain a bit skeptical to it (though the Egyptian leader Akhenaten seems to have had a more blended body in some ways). However, as you touched upon, occasionally some individuals today are born more blended than usual, perhaps kind of a shadow of that possible former expression. As to whether those current individuals tend to a have greater ability than average to tap into the creative force, remains to be seen. Some have been exceptional athletes, but that has little to do with spiritual attunement all in all and mostly has been female looking competors with higher than average testosterone levels because of the greater female-male blending.
Pollution, drugs during fetus development, inbreeding, and radiation can probably contribute to such alternations too, and so it's not necessarily always or even usually a consciousness or spiritual thing in our times--sometimes it's just a physical expression.