Human Sequential Hermaphrodites

[noxious123]

Do human Sequential Hermaphrodites exist? I know there are fish and some types of snails as well as other animals that are able to change sex, but I can’t seem to find any information on humans that may be able to.
I have found some information, but the information I am seeking is kind of specific as my definition of a Human Sequential Hermaphrodite is a being that absorbs one aspect of their gender and/or morphs into another, genetically, biologically and physically. Most of the sites I looked through don't seem to touch on the subject whatsoever.
I may be thinking a little too magically here as the technology and/or reality of them may not exist, but if they don’t and/or if they do, are there scientist that might be working on this kind of technology if so could you please give me a link or some information?
Thank you.

[Darby]

It doesn't match the way that gender is generated in mammals - hermaphrodites have clusters of mosaic cells from embryo formation lacking the Y chromosome, not something that could switch on and off later.

[noxious123]

Ok I may be thinking a little magically again here, but theoretically if nano-technology existed to a sufficient level that it would enable us to reconstruct the chromosomes, would you be able to become male or female, genetically, biologically and physically?
Are there Scientist working on Nano-Technology and its influences in gender theropy?

[Darby]

It's more likely to be magic than technology - some things aren't really plausible, and this is up there with flying horses.

[canalon]

The thing is. the sex is determined in Utero, so unless your nanotech can reconfigure the whole, body, changing just the chromosome is going to give a male body with an XX genotype. or vice versa.

[noxious123]

But nanotech doesn't really exist at the moment it’s still in development; the problem with it is that it needs to be small enough to enter the human blood stream without harming the patient and be able to interact with the blood cells as well; a bit like RNA strands when they try to convert the human body into replicates of its self. Would I be correct in assuming that if nanotech did exist to a sufficient level, that you could code a strand of RNA so that it replaced all the XY genotypes to XX ones and vice versa, or are RNA strands larger than individual DNA strands?