Genes from mother may influence intelligence in child more than father’s


Women are more likely to transmit intelligence genes to their children because they are carried on the X chromosome and women have two of these, while men only have one.

But in addition to this, scientists now believe genes for advanced cognitive functions which are inherited from the father may be automatically deactivated.

A category of genes known as “conditioned genes” are thought to work only if they come from the mother in some cases and the father in other cases. Intelligence is believed to be among the conditioned genes that have to come from the mother.

However, research also makes it clear that genetics are not the only determinant of intelligence – only 40 to 60 per cent of intelligence is estimated to be hereditary, leaving a similar chunk dependent on the environment.

But mothers have also been found to play an extremely significant role in this non-genetic part of intelligence, with some studies suggesting a secure bond between mother and child is intimately tied to intelligence.

The GLP aggregated and excerpted this blog/article to reflect the diversity of news, opinion, and analysis. Read full, original post: Children inherit their intelligence from their mother not their father, say scientists

  • Duncan Hackett

    Genes accounting for 40-60% of intelligence is not correct however you look at it. Highlighting the insights of Kurt Lewin more than 70 years after his work, researchers found that socioeconomic background had a major impact on genetic influences on intelligence: More specifically, when twins were reared in high socioeconomic status environments, genes accounted for approximately 72% of variance in intelligence scores between twins. When reared in low socioeconomic status environments, genes accounted for only about 8% of variance in intelligence within the twin pairs.

  • My son’s mother is not that smart, but she was clever enough to have a child with me. My son and I are both smarter than she is. My son is a mammone, so there certainly is a secure bond between him and his Italian mother.

  • Brendan Harradine

    Scientific research is but an inkblot in the hands of simplistic journalists with misandrist agendas…

  • terryhallinan

    This will surely frost Trump and his fans even more but truly frightening is the prospect for a chain of Clintons ruini, er, running the country.

    There is reason to take all this with a grain of salt. High scorers on IQ tests of all kinds only prove they can score high on IQ tests.

    Cats are acknowledged by the whole world, at least those of us who live in mountains, as vastly inferior to dogs but can survive quite well as feral animals and are even part of the environment now in New Zealand.

    I can’t imagine trying to survive with our dogs without dog biscuits. I don’t think there are any dog biscuit trees in nature.

    Best, Terry

    P.S. Yes I know about Pariah dogs in South Asia and know dogs, coyotes, wolves, jackals, dingoes and foxes are all mutually fertile but I would rather not think about such a bizarre species.

  • Pat Burke

    But men pass on X chromosomes, too, do they not? Women receive half their set from the father.

  • Albert Stroberg

    who said intelligence is on the X?

  • Thomas Standfield

    Turns out this this study was a load of BS. It quotes several studies out of context, suggesting that lab studies on genetically modified mice found that those with extra doses of maternal genes developed bigger heads and brains, while those with more paternal genes had smaller brains and heads.It also – referencing a different, unrelated study – said that researchers at Glasgow’s Medical Research Council found that the IQ of mothers was the best predictor of the intelligence of children. But a lot of the data is completely misused, .