No, you did not inherit your intelligence from your mother’s genes

| | October 10, 2016
mother and child
This article or excerpt is included in the GLP’s daily curated selection of ideologically diverse news, opinion and analysis of biotechnology innovation.

The premise of [a post from Second Nexus is] that science has traced “intelligence genes” to the X chromosome and that: “children are more likely to inherit intelligence from their mothers because intelligence genes are located on the X chromosomes (and mothers have two).”

Whatever is on the X can pass from mother to child or father to (usually) daughter, but the two X chromosomes the mother has aren’t the same and don’t at all automatically double the odds of inheriting a specific variant.

But there’s more…The doubled “gene dosage” for people with two (or more) X chromosomes is adjusted downward in a clever way: each cell turns off most of one X or the other. So inheriting an X-linked gene variant isn’t a guarantee that it will even be used because some cells might just shut it down.

So let’s get this out of the way: Intelligence is complicated…It’s layer upon layer upon layer of interacting pieces. So no. Not just your mother. Not just the X chromosome. Not even just genes.

The GLP aggregated and excerpted this blog/article to reflect the diversity of news, opinion, and analysis. Read full, original post: No, Research Has Not Established That You Inherited Your Intelligence From Your Mother

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