Is it in the genes?


What is it that makes us who we are? What drives our sexual urges, appetites, and preferences? Is it nature or is it nurture? Is it something completely random?

Take my sister and me, for example. My sister is three years older than me. To all intents and purposes, our DNA is pretty much identical. We’re about the same height, the same build (albeit my boobs are bigger, but she has a nicer arse), we have the same colour hair, and the same colour eyes. We share a very similar sense of humour, and in most respects, very similar personalities. However, when it comes to sex and sexuality, we couldn’t be more different.

That’s not to say my sister doesn’t enjoy sex as much as I do, because I’m pretty certain she does. Nor has she been without her share of sexual partners; although unlike me, all of her partners have been male.

Whereas I am openly and actively bisexual, my sister has no inclination towards girls. She can appreciate female beauty, she is not attracted sexually to other women.

Another difference between us is that casual sex is not her thing. She’s had a couple of flings between relationships, whereas, you could almost say, I’ve had a few relationships between flings.

I know, she’s never had sex with more than one person at a time, and while she isn’t averse to anal, it’s not a big feature of her repertoire; saving it “special occasions”.

One thing we do have in common is our love of giving blow-jobs. Given that I have previously recounted how I almost walked into her, mid-suck, this didn’t surprise me. Like me, she is also a swallower.

We both enjoy our toys, we both enjoy sex in slightly risky situations, we both enjoy it hard and, sometimes, a little rough, but whereas I enjoy a good thrashing from Master C’s belt, and I have some very obvious submissive tendencies (to put it mildly), my sister is much more vanilla in her tastes. She enjoys the occasional spanking, likes to be restrained from time to time, but by and large, kink is just an occasional bit of fun to spice things up. Anyone who is a regular reader of this blog, will know that for me, kink defines what Master C and I do.

So how is it that two people who have the same genetic heritage, have had the same upbringing, be so different. What made my sister the almost model of sexual respectability, while I am wanton slut? What makes us so different in our sexual appetites and tastes?

Oh, and while I’m at it, why is she able to hold her drink so much better than me?.

#MasturbationMonday
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3 thoughts on “Is it in the genes?

  1. It is a fascinating question. I may be a bit of a cynic a lot of the time, but things like this do make me ponder ideas around the soul, for if we are nothing more than the products of DNA, how then are we each still unique. Terrific thoughtful discussion, Morag 💖

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  2. And of course, a converse question could be asked about how two (or more) people completely different with no shared genetic code could have so many similar kinks and preferences. Are we hard-wired or is it learned behavior? Or…a combination of the two?

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  3. Those are interesting questions you pose. I think it is a combination of the two, nature and nurture. I also think that the genetic make-up of siblings is not identical, and so aren’t all the experiences you have had during your formative years. But I think that something like high or low libidos runs in families, and sex positivity and such can be taught during childhood.

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