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Les Bretons sont génétiquement (un peu) différents !

Les Bretons sont-ils des Français un peu à part ? À l’évidence oui, si l’on dissèque leurs singularités musicales, linguistiques, gastronomiques, etc. Mais même au plus profond de leurs chromosomes, les habitants de la Bretagne conserveraient une identité un tantinet différente de celle des autres peuplades de l’Hexagone. Un échantillon de 2 200 personnes Avant d’arriver à conclure à un particularisme breton, les scientifiques ont réussi à brosser le premier portrait génétique de la population française, grâce à deux bases de données regroupant 2 200 personnes. « On accusait un certain retard, beaucoup de pays avaient déjà publié ce type d’études à l’échelle nationale, les Anglais, les Espagnols, les Allemands, etc. », note Aude-Saint Pierre, maître de conférences à l’Université de Bretagne occidentale, à Brest, et chercheuse Inserm.

Newly Discovered Genetic Mutations May Increase Risk for Lou Gehrig s Disease

Jul 01, 2021 5:30 PM Author: Doug Dollemore Newly detected genetic mutations could increase a person’s risk of developing ALS, according to University of Utah Health researchers Lynn Jorde (left) and Kristi Russell. Photo credit: Dave Titensor During his 17-year career with the New York Yankees, Lou Gehrig was famed for his prowess as a hitter and for his durability on the baseball field, which earned him his nickname The Iron Horse.” Then, mysteriously, in 1938, his iron body began to figuratively rust. He couldn’t run, hit, or field his position as well as he once did. When doctors finally diagnosed his condition, the news was devastating.

Coronavirus almost certainly came from an animal, not a lab leak, top scientists argue

Coronavirus almost certainly came from an animal, not a lab leak, top scientists argue By Maggie Fox, CNN enablePagination: false endIndex: (CNN) The coronavirus pandemic almost certainly originated from an animal, probably at a wildlife market in China, and not from a laboratory leak, a group of virus experts said Wednesday. Theories about a lab leak are almost all based on coincidence, not hard evidence, the group of 20 top experts from the US, UK, Australia, New Zealand and elsewhere said. They had been following discussions going all the way to the White House about the possibility of a laboratory origin of the virus, and worked together to analyze the evidence.

Optical genome mapping could change the existing workflow within cytogenetic laboratories

Optical genome mapping could change the existing workflow within cytogenetic laboratories Dutch-French research shows that Optical Genome Mapping (OGM) detects abnormalities in chromosomes and DNA very quickly, effectively and accurately. Sometimes even better than all existing techniques together, as they describe in two proof-of-concept studies published in the American Journal of Human Genetics. This new technique could radically change the existing workflow within cytogenetic laboratories. Human hereditary material is stored in 46 chromosomes (23 pairs). Although those chromosomes are quite stable, changes in number or structure can still occur. A well-known example is Down syndrome, which is caused by an extra chromosome 21 (trisomy 21). An extra chromosome makes a big difference and is quite easy to visualize. But all kinds of other, smaller changes can occur as well in chromosomes.

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