Futa Gene Variance

[edihe]

This is going to be long and elaborate, bear with me

Let's assume you payed attention in school and skip basic biology.
What is different in this fantasy world is there is a genetic marker that only appears in X chromosomes that cause futanari to be born, but it only affects the female child when it has 2 sets.

If you only have 1 affect X chromosome you are deemed a carrier.
If both parents are a carrier and it becomes a girl there is a 50% chance remaining if the mother passes the affected X chromosome or the normal one.

If the mother is a futa and the father is normal the child will be a carrier of either gender.

Now if the mother is a futa and the father is a carrier the child will be either a male carrier or a futa, since no normal X chromosome is present between them.

Futanari in this fantasy world are deemed fully functional, penis, balls and vagina.
The futanari also have 2 sets of prostates the male one that can be stimulated through the intestine wall, and the female one (skene gland) also known as the G spot.
For the sake of ease the futanari don't have a clitoris and urinate through their penis.

Other side effects

Futa are attracted to females by nature. (with exceptions)
But the children will either be female carriers or futa if the mother is a carrier.
The exception being the male carriers which release natural pheromones attract futanari after puberty and make them aroused in when in large quantities.
The other exception being not attracted to other female futa.

Nature made futa more common by the male carrier pheromones.

Futa love to be the dominant one in futa - female sex, but in futa - male-carrier ones they love to be penetrated.

When a Futa is stimulated on both sex organs at once she has a crazy orgasm.
If you stimulate a futa on both sex organs and stimulate the prostate she generally passes out after an orgasm.

So much for the biology talk

Story Idea

A single (futa) mother is raising a son (carrier).
The son is fully aware of his mother being a futa.
Neither the mother or son is fully aware of the biology details since they are only made aware to the reader.

The mother often has masturbation sessions when she has to wash her sons dirty sports clothing and sniffs her sons underwear deeply.

The son got a close futa friend (who moved there years before).
(Trying to establish close friend, but not not half sister because of moms actions
)
(Maybe even got outed as a futa and moved to his area.)

Son hangs out with the futa friend and they talk about everyday stuff, sports, games, whatever.
And off course girls since they are both attracted to female by nature.
Son is aware that his friend is a futa and the friend is glad that he understands.
(Leaving the little bit of information in limbo if futa friend and mother know about each other, but a mother has to at least suspect)
The futa friend is secretly very much into him but is clueless why he is the only male she is sexually attracted to.
She kept it secret since they both hit puberty and she started getting affect by the pheromones.

To the outside world they are seen as a regular guy and his lesbian friend who pretty much grew up together.

Sometimes his male sports friends tease him that he needs to convert his lesbian friend (from their point of view) that she is clearly into him, but he keeps holding on that they are just very close childhood friends.

Story cliches you can throw in

• Sport friends offer to convert his lesbian friend (from their point of view), which could innate some fight.
• Friend steals sons boxer shorts or something to have some masturbation tool just like mom, maybe even run into each other.
• A new futa appears and starts trespassing into the longtime futa friend territory.
• Mom sets son and futa friend up, knowing the natural attraction they must have for each other.

* Attracted by nature means, there could be gay variants
* Off course while futa are not attracted to males, they could be forced into a seemingly normal relationship by religion, or have an accident while experimenting at a young age

 

[CuteSlaveLisa]

This is an observation and in no way a criticism but your prospective audience IMHO drops off in a 1:1 proportion to the amount of thinking that you ask your readers to engage in.

Personally I love using my brain but then I know I am... Different.

When my future lover Eva and I sat in her father's library, reading different biblical passages (her father was and she is an ordained Christian minister) and compared and contrasted them, their content, at ages six and seven... Rather than play with dolls like other little girls we became "gay." Because 'gay' really means different.

I really wonder what the world would be like if we all possessed both sets of genitalia but couldn't do it with ourselves (like Hy's banana slugs). Of course humans are social ANIMALS and connection, one to another is JMO holy. Sex with my lovers is the gift of a loving God.

I was going to say KISfS (Keep It Simple for Stupid) but I realized I don't myself follow that advise...

Love and Kisses

Lisa Ann

 

[edihe]

There is a sort of sliding scale of people wanting complexity, this might be at the very high end.

One of the options is to drip feed bits of information while the characters in the story discover the information and make like a skipable Ch 0 with all the details of the fictional world typed out.

It's just sad that most of the futanari stories on lit are actually just shemale instead.
They never have vaginal sex, don't get wet but seem to leak precum etc etc.
I'm pretty sure if you bring someone who is at least 50% female to an orgasm you would at least get 50% as wet as a regular female.

 

[Hypoxia]

There is a sort of sliding scale of people wanting complexity, this might be at the very high end.

True, but I've seen more arcane mazes in longer stories, some of which I even read to the end.

One of the options is to drip feed bits of information while the characters in the story discover the information and make like a skipable Ch 0 with all the details of the fictional world typed out.

Info should be sprinkled, not dumped. A brief intro may set the scene; or start with action and let the background leak in later. Let slip that Futa-nism (??) is a genetic thang. Now, more action. Then, a few details about the genetics. Insert some hot action; pause; create a dilemma. Now explain the dilemma's cause, which may be more genetics. Hot sex comes next. Then figure out how to reach the desired conclusion, stumbling and fucking along the way.

I tried that Ch.0 trick. It's the most-read and -faved in its series, but I posted it last with the least sex. Go figure.

 

[AlinaX]

I always find it disappointing to read futa stories where the vagina doesn't even get a mention. Just because you have a hungry cock doesn't mean you don't have an equally hungry pussy...

 

[CuteSlaveLisa]

Perhaps because most of the writers (and readers) on Lit are male?

Love and Kisses

Lisa Ann

 

[LupusDei]

I always find it disappointing to read futa stories where the vagina doesn't even get a mention. Just because you have a hungry cock doesn't mean you don't have an equally hungry pussy...

For the sake of ease the futanari don't have a clitoris and urinate through their penis.

If she don't have clitoris her vagina is no more sensitive than male rectum.

Perhaps because most of the writers (and readers) on Lit are male?

And most of that male audience think about clitoris just as that little button outside, not aware about the huge inner workings that hug vagina and extend all the way to rectum making sex orgasmic for a female. There may no be such thing as "vaginal orgasm" all orgasms are clitorial, only difference is how it is being stimulated.

Penis is futa clitoris, that's the same organ in fact, and in futa variance perhaps is hybridized including the female inner parts as well as male outer. Wiring urethra through it is sane perhaps, but I wonder about the futa balls. I may be mistaken here, but doesn't ballsack in males correspond to outer labia lips in females? Futa may have both or something in between, but better make them able to recede up inside or there's no missionary position in MU (Male+fUta) sex.

As to genetics...

The whole thing is just a gigantic excuse to over explain why this particular fostering futa lesbian, almost-but-not-quite step-sister, is suddenly irresistibly attracted to our particular boy of interest, as is his own futa mother. Along with establishing a society where futa is more persecuted and discriminated against than simple gays, who seem almost-but-maybe-not-quite accepted.

It could be held almost completely out from reader's concern, or be let for interested reader to reconstruct just by showing workings of the world as a whole. If there is interest to explicitly explain it, the best way is probably a character who either learns all that stuff as the story progress, or is knowledgeable and explain it to someone. Omniscient third-person narrator could overhear conversations between minor characters leaving main actors in the dark, if that's the intend. In plain narration eighteen century style "...so he did, but what he didn't know was, [insert a scientific treatise]" can of course be done, but... it's kind of sand in teeth sometimes.

However, it seems to mostly make sense. I kind of like how you made the Futa chromosome (let it be U) repressed so it is possible for a futa child to be born for unsuspecting parents in UX + UY -> UU case. By the way UY special pheromones are not so much nature's way to make UU more common, but generally to preserve Y in circulation in the long run, just like futa general attraction to classic female is attempt to preserve X in circulation.

Else, if UX female produce U eggs with 50% chance X goes slowly but steadily extinct, as does Y in any case:

XX + XY -> 100% X + 50% X | 50% Y -> 50% XX | 50% XY

XX + UY -> 100% X + 50% U | 50% Y -> 50% XU | 50% XY

XU + XY -> 50% X | 50% U + 50% X | 50% Y -> 25% XX | 25% XU | 25% XY | 25% UY

XU + UY -> 50% X | 50% U + 50% U | 50% Y -> 25% XU | 25% UU | 25% XY | 25% UY

XX + UU -> 100% X + 100% U -> 100% XU

XU + UU -> 50% X | 50% U + 100% U -> 50% XU | 50% UU

UU + XY -> 100% U + 50% X | 50% Y -> 50% XU | 50% UY

UU + UY -> 100% U + 50% U | 50% Y -> 50% UU | 50% UY

UU + UU -> 100% U + 100% U -> 100% UU

I totally love the line XX + UU -> 100% XU! I think I will have to jerk off looking at that formula. That is totally my kind of porn. For a while there's colossal gender imbalance building up, sneaky futa "lesbian" couples having only carrier female daughters. It is understandable rapid growth strategy for U gene egoism, and XX is unconcerned because it survives the current transaction. But then XU + UU -> 50% XU | 50% UU make thinks difficult endangering the X.

That UU + XY -> 50% XU | 50% UY is deprecated for story purposes make it much worse. Together with XU + UY -> 25% XU | 25% XY it could go long way to keep X in circulation, if not even make it more or less stable. U gene egoism alone seems not enough, but then it kind of make sense that UU is attracted to XY the least, and for XY the UU is effectually an alien. Perhaps it is more not so much that UU is not attracted to XY so much, but that most XY also find UU annoying in uncanny valley kind of way, inciting but repulsing. Since XY rules the modern world it also explain the persecution a great deal. It is also why UY needs pheromones to carry Y along and ensure its long term survival in UU + UY -> 50% UY.

Finally UU + UU -> UU is likely the "boring" far future, does they like to be gay or not.

I don't care so much for XY dying out, but I want XX or at least XU female to be produced indefinitely, even when UU reach significant percentage of population. Since we can't recover UU + XY case, there are two options. Either U is even more repressed and XU female produce X eggs, say 80% of time, or perhaps even better, some percentage of U develop as regular X so, for example UU + UU -> 25% XX | 25% XU | 50% UU (note there's no Y, UY should care for itself to provide some dwindling population of manly-males). Genetics is never so simple, there's XX males and XY females around in real world, so a technical UU taking any of three possible appearances depending on other factors isn't much of a stretch.

(Btw, as far I understood, UU are rather indistinguishable from XX or XU while clothed, unless they want it to show. I sense opportunity for forced nudity, and even exclusively for female-looking part of population... with is absolute majority by that point. Or perhaps it will even be XX and XU who will decide to advertise that they don't have dicks in no uncertain way.)

 

[AlinaX]

Kara is a futa girl
She doesn't have a clit
But if your cock is big enough
She'll never want to quit