Sebastian Zearing

how to be progressive without being a stupid liberal

Tag Archives: genes

Human biodiversity

This prediction was made on 28 July 2015.

Human biodiversity (HBD) is the notion that the biological entity known as Homo sapiens sapiens is subject to subpopulation differences in virtually all conceivable characteristics because of irregular distributions of genetic alleles. This is also identified by some with “racism,” and yet by others with “race realism.” I reject both labels as “race” isn’t a well-defined biological concept, and also essentialism is false. The main purpose of HBD is to provide a view specifically opposed to blank-slatism: though many human characteristics (such as skin color, tooth shape, susceptibility to sickle-cell anemia, adult ability to digest milk, etc.) are known to vary across subpopulations (which does happen to be a well-defined, non-essentialist biological concept), many find it difficult to extend this simple concept into the neurological, psychological, cognitive, and behavioral realms.

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Sexuality, androphilia, gynephilia, and gay genes

Edit 28 July 2015: This post argues that strong social pressures are the primary reason homosexuality occurs with such high frequency (vs. ~0%). Though I do not rescind the claim of social pressure affecting rates of homosexuality, I do now believe that the intrinsic noisiness involved in differentiating the androphilic brain from the gynephilic brain in the developing human is probably the greater causal factor in the high rates of homosexuality. A better treatment can be found here.

I hang out at Lion/halfsigma’s blog occasionally, and something he posted yesterday caught my eye. You can read it yourself, but the post was about Obama’s recent call to end conversion therapies for LBGT youth. I won’t comment on that topic itself, other than to note I don’t see anything wrong with governments banning unproven/disproven/known deleterious medical interventions, particularly in youth where consent is squishy. Instead, I want to comment on the responses to his post, in particular JayMan’s comment and hyperlinked post about the topic of the causes of homosexuality. I wrote a reply there, but I want to make a post for my own blog on the topic.

The first thing I want to very forcefully clarify on this topic is that sexuality is patently and obviously genetic. Whether or not you have a Y-chromosome predicts with around 93~98% accuracy whether you find women or men sexually attractive. Almost all the people that have the specifically genetic entity known as the Y-chromosome are sexually attracted to women, and almost all the people that do not have that genetic entity are sexually attracted to men.

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