A Momentary Flow

Updating Worldviews one World at a time

Genome search still can’t explain lefties
New research rules out a “strong genetic determinant” in influencing left- or right-handedness. The researchers conducted a twin study examining the whole genome—which contains hereditary information—of nearly 4,000 subjects from the London Twin Research Unit to compare left- and right-handed participants. Their findings are published in the journal Heredity. The study was unable to find a strong genetic factor in determining handedness. If there was a single major genetic determination of handedness, there should be a detectable shift between left- and right-handed people in the frequency of variants in that part of the genome—and this isn’t the caseStudy author John Armour, professor of human genetics at the University of Nottingham, says: “There should be a detectable shift between right- and left-handed people because modern methods for typing genetic variation cover nearly all of the genome. A survey that compared the whole-genome genotypes for right- and left-handed people should leave such a gene nowhere to hide.” (via Genome search still can’t explain lefties | Futurity)

Genome search still can’t explain lefties

New research rules out a “strong genetic determinant” in influencing left- or right-handedness. The researchers conducted a twin study examining the whole genome—which contains hereditary information—of nearly 4,000 subjects from the London Twin Research Unit to compare left- and right-handed participants. Their findings are published in the journal Heredity. The study was unable to find a strong genetic factor in determining handedness. If there was a single major genetic determination of handedness, there should be a detectable shift between left- and right-handed people in the frequency of variants in that part of the genome—and this isn’t the caseStudy author John Armour, professor of human genetics at the University of Nottingham, says: “There should be a detectable shift between right- and left-handed people because modern methods for typing genetic variation cover nearly all of the genome. A survey that compared the whole-genome genotypes for right- and left-handed people should leave such a gene nowhere to hide.” (via Genome search still can’t explain lefties | Futurity)

Notes

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    It isn’t genes. It’s testosterone levels when in the womb.
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    I’m a mystery!
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    Genome search still can’t explain lefties | Futurity
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