DNA
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X @The Economist
The Economist· 2025-12-20 05:40
Genetic studies found traces of Denisovan DNA in modern people, particularly across Asia, just as Neanderthal DNA shows up in present-day populations around the world https://t.co/lMnJ8VkqSW ...
X @Nick Szabo
Nick Szabo· 2025-12-20 02:12
RT Nick Szabo (@NickSzabo4)Besides amino acids made from scarce single-nitrogen molecules, another crucial building block hard for life to get from the environment is phosphate, out of which is made the core molecules of life: DNA, RNA, and the ubiquitous energy molecule adenosine triphosphate (ATP). ...
X @BBC News (World)
BBC News (World)· 2025-12-19 13:29
Missing hitchhiker and the DNA breakthrough that caught killer https://t.co/v0DEEill4n ...
DNA o ESPOSOMA: i segreti del metabolismo e della longevità | Antonio Moschetta | TEDxLecce
TEDx Talks· 2025-12-11 17:34
A me forse il compito nella forma più semplice quello di coniugare questo motto semi con la biologia e con la medicina, però è il compito forse più intrigante nella sostanza. più intrigante perché quando parliamo di seminare parliamo di crescita, parliamo di energia, noi in fisiologia parliamo di metabolismo e cerchiamo di capire cosa è avvenuto negli ultimi 30 anni e cosa potrebbe avvenire nel prossimo futuro. In primis, longevità.Istat 1970 dichiara un'aspettativa di vita per l'Italia in media di 69 anni. ...
X @Nick Szabo
Nick Szabo· 2025-12-04 05:56
RT Nick Szabo (@NickSzabo4)Perhaps. But you're being even more pessimistic than the creationists!Per some more queries I have just made of ChatGPT, if we take a thousandth of the amino acids of the comets in our solar system, put them on earthlike planet(s), and have them spontaneously form larger peptides and proteins, each amino acid participating in one such new combination per second, then the odds of them generating all the proteins in LUCA in one particular trial, during ten billion years of such tria ...
X @The Economist
The Economist· 2025-11-27 20:40
Francis Crick helped solve one of biology’s most fundamental puzzles: the structure of DNA. A new biography reveals the traits that made Crick one of the 20th century’s greatest scientists https://t.co/MKCawv8fyI ...
Smashing Stereotypes in Science: Genetics and the future of the NHS | Holly Ellis | TEDxTeesside
TEDx Talks· 2025-11-26 15:55
Every day for five years, I walked in and out of this building at school for my science lessons, never questioning who Rosyn Franklin was or why she had a building named after her. It was only when we studied genetics at school that I finally learned of her story. Rosyn Franklin was a scientist whose work was crucial in discovering the structure of DNA.But because she was a woman, all the credit and the Nobel Prize went to her two male colleagues, James Watson and Francis Crick. This was the first time I'd ...
Uncovering Hannah Fry’s DNA
Bloomberg Originals· 2025-11-17 18:43
Ancestry Analysis - The individual's DNA reveals 56% Irish ancestry, suggesting paternal Irish heritage [1] - The individual's mother is determined to be 100% Irish, with ancestry traced back three to four generations in Tammore [2][3] Historical Context - Rural Ireland saw limited mobility, with individuals typically moving no more than 6 to 10 miles (approximately 9656 to 16093 meters) in their lifetime before the bicycle's invention [4] - Family farming history in Talmore can be traced back to at least 1825 [5]
X @The Economist
The Economist· 2025-11-16 12:20
The discovery of DNA’s structure was the result of hard work, a mad scramble and bad manners. James Watson was shown a photo of an X-ray diffraction without the permission of the crystallographer, Rosalind Franklin https://t.co/c1D1DVUjFn ...
生命的意义在哪?基因不是全部答案
Guan Cha Zhe Wang· 2025-11-16 09:28
Core Insights - The conversation highlights the evolving understanding of biology, particularly the role of genes and DNA, challenging traditional views that consider them as the sole controllers of life [4][9][10] Group 1: Understanding of Genes and DNA - The author Philip Ball argues that genes and DNA should be viewed as "molecular resources" that cells utilize based on their environment rather than as strict instructions governing all biological processes [9][10] - The historical perspective of genes as a "code" directing all biological functions is deemed outdated, with a shift towards understanding the complex interactions within cells [8][9] - The concept of "selfish genes" is critiqued, suggesting that it oversimplifies the intricate regulatory mechanisms at play in biological systems [12][19] Group 2: Medical Implications - Ball emphasizes the need for a more holistic approach to medicine, moving beyond genetic-level interventions for diseases that may not primarily stem from genetic issues [10][11] - The discussion points out that many common diseases are influenced by higher-level biological processes rather than solely by genetic factors [10][11] - The author suggests that current medical practices often resemble trial-and-error methods rather than being based on a deep understanding of biological mechanisms [11][12] Group 3: Complexity of Biological Systems - The conversation addresses the complexity of cellular environments, likening them to crowded nightclubs rather than orderly factories, highlighting the chaotic interactions among molecules [27][29] - The role of biomolecular condensates in cellular processes is introduced, emphasizing the importance of understanding these structures for effective medical interventions [24][26] - The need for advanced imaging techniques, such as cryo-electron microscopy, is discussed as a means to better visualize and understand cellular dynamics [27][29] Group 4: Emergence and Agency in Biology - The concept of "agency" in biological systems is explored, suggesting that organisms, including cells, exhibit decision-making capabilities that go beyond mere genetic programming [30][32] - Ball argues that understanding the agency of living organisms is crucial for comprehending the essence of life, distinguishing it from non-living entities [32][34] - The discussion touches on the philosophical implications of human decision-making and its divergence from evolutionary imperatives, indicating a complex interplay between instinct and conscious choice [34][36] Group 5: Future Directions in Biological Research - The potential of AI in biological research is acknowledged, particularly in predicting gene regulation and understanding complex biological phenomena [21][23] - However, concerns are raised about the limitations of AI in providing mechanistic explanations for biological processes, emphasizing the need for a deeper understanding of underlying mechanisms [23][24] - The conversation concludes with a call for better narratives in biology that reflect its complexity and the agency of living systems, moving away from simplistic explanations [49][50]