Left-handed, right-handed? Researchers zeroing in on genetic factors, development in the womb

e bb a ba e e bdff d cdca a
Image: Fox

For the first time, scientists have pinpointed regions of human DNA that closely relate to whether people are right- or left-handed. They also linked these regions to language-related features in the brain.

Three of the regions are either within or influence genes that code for proteins that are “involved in brain development and patterning.”

These proteins have a key role in making scaffolding-like building blocks called microtubules that guide the construction of cells.

Comprising long-chained molecules, microtubules make up the cytoskeleton, or the physical structure of cells throughout the body, and can assemble and disassemble very quickly in response to cell signals.

Related article:  Video: Why having a dog can put you in a ‘state of calm’

The genes that drive the formation of the cytoskeleton are also responsible for right and left differences in growth and development in animals. This can appear, for example, in snails whose shells can coil either to the left or the right.

“We know from other animals,” [researcher Gwenaëlle] Douaud continues, “such as snails and frogs, that these effects are caused by very early genetically guided events, so this raises the tantalizing possibility that the hallmarks of the future development of handedness start appearing in the brain in the womb.”

Read full, original post: Scientists identify genetic components of left-handedness

Outbreak Daily Digest
Biotech Facts & Fallacies
Talking Biotech
Genetics Unzipped
Infographic: What are mRNA COVID-19 vaccines and how do they work?

Infographic: What are mRNA COVID-19 vaccines and how do they work?

As of 1 December 2020, thirteen vaccines have reached the final stage of testing: where they are being given to ...

Environmental Working Group: EWG challenges safety of GMOs, food pesticide residues

Known by some as the "Environmental Worrying Group," EWG lobbies ...
m hansen

Michael Hansen: Architect of Consumers Union ongoing anti-GMO campaign

Michael K. Hansen (born 1956) is thought by critics to be ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
glp menu logo outlined

Newsletter Subscription

Optional. Mail on special occasions.
Send this to a friend