Anne Delong<p><span class="h-card" translate="no"><a href="https://mstdn.ca/@DavidM_yeg" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>DavidM_yeg</span></a></span> <span class="h-card" translate="no"><a href="https://sauropods.win/@futurebird" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>futurebird</span></a></span> </p><p>I started playing the violin after retirement. As a lefty, I struggled for a long time to maintain the correct bow hold while keeping a relaxed wrist. Then one day I happened to pick up the bow with my left hand, and automatically held it correctly, even though I had never done it before. Somehow the skill transferred between hands....</p><p><a href="https://musician.social/tags/violin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>violin</span></a> <a href="https://musician.social/tags/handedness" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>handedness</span></a></p>
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Prebiotic chiral transfer from self-aminoacylating ribozymes may favor either handedness: https://www.nature.com/articles/s41467-024-52362-x -> Mystery of Life’s #Handedness Deepens: https://www.nasa.gov/science-research/planetary-science/astrobiology/nasa-mystery-of-lifes-handedness-deepens/
NaturePrebiotic chiral transfer from self-aminoacylating ribozymes may favor either handedness - Nature CommunicationsLife is homochiral, and prior work posited that D-RNA may interact preferentially with L-amino acids. Here, the authors show that self-aminoacylating D-RNAs do not have an intrinsic preference for L-amino acids, suggesting that either handedness could emerge from early living systems.
Fortgeführter Thread
… because I had unknowingly made a very obvious error in my logic about the cause of my elder's hand problems.
See, if I get too fatigued when hand sawing something, I simply switch hands and use the other to saw. Lots of us #Lefties can do that and never think twice about it.
But my elder was right-handed, as as is common for such folk, staunchly so. There would be no hand-switching for tools, yet both hands were equally as damaged.
18/x
Fortgeführter Thread
Do any #sports have this kind of ambidextrous standard today? From the 1923 Women's Olympiad:
"Each athlete in the shot put and javelin throw events threw using their right hand, then their left. Their final mark was the total of the best mark with their right-handed throw and the best mark with their left-handed throw."
A Shape Called a 'Sphinx' Could Explain Handedness in Biology
https://www.sciencealert.com/a-shape-called-a-sphinx-could-explain-handedness-in-biology #chemistry #biology #chirality #sphinx #handedness #symmetry
ScienceAlert · A Shape Called a 'Sphinx' Could Explain Handedness in BiologyFrom the helix of a strand of DNA to the arrangements of protein's building blocks, the twists and swirls of biochemistry often follow a surprisingly consistent orientation of left- and right-handedness known as chirality.
A small rant about zombie ideas and the tendency to keep looking for modifications of study methods to avoid concluding that a null result is really null. http://deevybee.blogspot.com/2024/03/just-make-it-stop-when-will-we-say-that.html
#research #nullresults #laterality #handedness #publicationbias
deevybee.blogspot.comJust make it stop! When will we say that further research isn't needed? I have a lifelong interest in laterality, which is a passion that few people share. Accordingly, I am grateful to René Westerhausen who ...