Navigation Links
What makes us left or right handed? New study rules out strong genetic factors
Date:10/1/2013

Around 10 per cent of the UK is left handed and that percentage remains consistent in many populations around the world. But why exactly someone is left or right handed remains unclear.

New research from The University of Nottingham's Professor John Armour and Dr Angus Davison, in collaboration with UCL's Professor Chris McManus, has ruled out a 'strong genetic determinant' in influencing 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.

The study 'Genome-wide association study of handedness excludes simple genetic models' has been 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 case.

Professor Armour, Professor of Human Genetics at The University of Nottingham, said: "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."

Despite the absence of a strong genetic factor, it is widely believed that handedness is not only a matter of choice or learning. This study suggests, therefore, that genetic factors in handedness must be relatively weak and subtle, which has ramifications for future studies.

Professor Armour said: "It is likely that there are many relatively weak genetic factors in handedness, rather than any strong factors, and much bigger studies than our own will be needed to identify such genes unambiguously. As a consequence, even if these genes are identified in the future, it is very unlikely that handedness could be usefully predicted by analysis of human DNA."


'/>"/>

Contact: Fraser Wilson
fraser.wilson@nottingham.ac.uk
01-158-466-691
University of Nottingham
Source:Eurekalert

Related biology news :

1. The loss of a protein makes jump the tumor to the lymph node
2. Why spring is blooming marvelous (and climate change makes it earlier)
3. UH makes Princeton Reviews Green List 3 years in a row
4. Modern hybrid corn makes better use of nitrogen, study shows
5. Same gene that stunts infants growth also makes them grow too big
6. Cystic fibrosis makes airways more acidic, reduces bacterial killing
7. Diabetes drug makes brain cells grow
8. UCLA research makes possible rapid assessment of plant drought tolerance
9. Queens University Belfast makes significant cancer breakthrough
10. Waste cooking oil makes bioplastics cheaper
11. Treatment with fungi makes a modern violin sound like a Stradiavarius
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/31/2017)... Mass. , Jan. 31, 2017  Spero ... novel therapies for the treatment of bacterial infections, ... set of antibacterial candidates from Pro Bono Bio ... increased prevalence of multi-drug resistant forms of Gram-negative ... Cantab Anti Infectives Ltd, a PBB group company. ...
(Date:1/26/2017)... 26, 2017  Acuity Market Intelligence today released ... Digital Identity".  Acuity characterizes 2017 as a "breakout" ... adoption reflects a new understanding of the potential ... and digital identity are often perceived as threats ... , Principal of Acuity Market intelligence. "However, taken ...
(Date:1/24/2017)... 24, 2017  It sounds simple and harmless—an ... monitors vital signs and alerts parents on their ... saturation level drops. But pediatric experts argue that ... with no evidence of medical benefits, especially to ... aggressively to parents of healthy babies, promising peace ...
Breaking Biology News(10 mins):
(Date:2/25/2017)... ... February 25, 2017 , ... The ... in an ongoing effort to create meaningful change by increasing communication, partnerships and ... emphasis on consumers and patients’ mental health well-being. , Both organizations are dedicated ...
(Date:2/24/2017)... DIEGO , Feb. 24, 2017  Aethlon Medical, ... following note authored by its Chairman and CEO, ... at the Munich Security Conference last Saturday, Bill ... virus could kill more people than nuclear weapons. Mr. ... U.S. and U.K. intelligence agencies, that scientific terrorists have ...
(Date:2/24/2017)... China Biologic Products, Inc. (NASDAQ: CBPO) ("China Biologic" ... in China, today announced its financial results for the fourth ... Quarter 2016 Financial Highlights Total sales ... RMB terms, or increased by 13.6% in USD terms to ... 2015. Gross profit increased by 13.3% to ...
(Date:2/23/2017)... ... February 23, 2017 , ... BellBrook ... portfolio to include an array of biochemical analyses critical for Lead Discovery. ... their hit-to-lead and SAR programs, including inhibitor potency and selectivity, mechanism of action, ...
Breaking Biology Technology: