Pedro Santamaria's Avatar

Pedro Santamaria

@p-santamaria

Retired researcher in Developmental Genetics, Evo-Devo. Drosophila. Polycomb Group. (PRC genes. "polyhomeotic" & etc.), Nuclear transplantation in the egg. Cell mosaics and chimeras. Epigenesis in Drosophila. CSIC --> CNRS. Hobby: mosaics.

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Latest posts by Pedro Santamaria @p-santamaria

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Antonio García-Bellido (1936–2025) Peter Lawrence commemorates the work of developmental biologist Antonio García-Bellido, who revolutionised our understanding of the genetic basis of animal development.

Peter Lawrence ( "suigeneris" ) portrait of Antonio García-Bellido.

www.cell.com/current-biol...

11.03.2026 18:38 👍 1 🔁 0 💬 1 📌 0
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China pledges billion-dollar spending boost for science Funding for national laboratories and important research projects would increase under the government’s plans.

Un jour les "occidentaux" ( chauvins ou pas) vont réfléchir.
www.nature.com/articles/d41...

11.03.2026 12:57 👍 0 🔁 0 💬 0 📌 0
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Ig Nobels to move awards to Europe due to concern over US travel visas Scientific awards – which honor research that makes people laugh and then think – to move away from ‘unsafe’ US

Do you see ? So, here we can give a Ig-Nobel (of Pace) to warrior Dumb'o. Who will not come take it !

www.theguardian.com/science/2026...

11.03.2026 08:33 👍 3 🔁 2 💬 0 📌 0
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How pollutants and poo paint a picture of past civilizations A blend of chemistry and molecular-biology techniques are enabling archaeologists to mine ancient sediments for clues about the people who once lived there.

- "Scatological interest" : Coprostanol, a molecule in human faeces could shine a light on human population trends. They’re durable little suckers.

www.nature.com/articles/d41...

11.03.2026 08:25 👍 0 🔁 0 💬 0 📌 0

Je serais tres déçu si ce que dit l'article est vrai !! Cette femme semble "creuse" !

11.03.2026 08:05 👍 0 🔁 0 💬 0 📌 0
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Daily multivitamin slows signs of biological ageing The supplement’s anti-ageing effect was greater in people who were already biologically older than their years.

- At 84 years. And I don't believe the significance given by so many newspapers about : "A vitamin a day keeps the methylation at bay" ! ( I prefer apples & fruits).
- "The beneficial effect of daily multivitamins on biological ageing markers is necessarily small"

www.nature.com/articles/d41...

11.03.2026 07:55 👍 0 🔁 0 💬 0 📌 0
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Jay Graber Is Leaving Her Role as CEO of Bluesky Graber is shifting to a chief innovation officer role.

- Hey, you ! Do you know that ?
- Things are the way they seem ?
- Am I a "dilettante ?

gizmodo.com/jay-graber-i...

11.03.2026 07:29 👍 0 🔁 0 💬 1 📌 0
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Anne Applebaum inspects the shards of post-war order — Harvard Gazette Atlantic staff writer weighs Ukraine’s future, “radical” threats to global stability.

The resurgence of "Ethnonationalism" (each one and all of them) is a plague !!

news.harvard.edu/gazette/stor...

11.03.2026 07:11 👍 0 🔁 0 💬 0 📌 0

🪰 Join us at the Swiss Drosophila Meeting on June 29 at the University of Geneva!
🌟 Connect with peers and explore exciting research.

Don’t miss out! 👉 swiss-drosophila-meeting.unige.ch #Drosophila #ScienceEvent
@biology-unige.bsky.social

10.03.2026 09:11 👍 5 🔁 3 💬 0 📌 0
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La Chine, nouvelle superpuissance scientifique Le pays ambitionne d’être au premier plan dans toutes les disciplines scientifiques, en particulier l’astronomie, avec le télescope FAST, symbole de ce changement d’échelle. Si ses institutions et ses...

Dois je me répéter ?

www.lemonde.fr/sciences/art...

10.03.2026 09:22 👍 0 🔁 0 💬 0 📌 0
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L’attirance contrariée de la recherche française pour la Chine : « On ne joue pas dans la même cour » Le géant asiatique est désormais un acteur incontournable dans la recherche mondiale, avec une hausse des collaborations internationales. En France, les craintes liées au risque d’espionnage freinent ...

- Les "chauvins" (d'ici et de plus loin) n'ont pas envie de croire cela. Mais bientôt les évidences seront patents.
- Je ne sais pas si c'est inéluctable, mais ne pas vouloir le voir ne résout pas le problème.
- Sauf que... ce l'est (un problème) ?

www.lemonde.fr/sciences/art...

10.03.2026 09:20 👍 0 🔁 0 💬 0 📌 0
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Members of Congress Request Investigation into Alleged Reports that Military Leaders Claim War in Iran Part of Biblical End-Times Prophecies | U.S. Congressman Jared Huffman The Official U.S. Congressional website of Congressman Jared Huffman

Once more another Religious War ! We must ensure that military operations are guided by facts and the law, not end-times prophecy and religious beliefs. Pete Hegseth and civilian officials have publicly framed Middle East policy in explicitly religious terms.

huffman.house.gov/media-center...

10.03.2026 07:15 👍 0 🔁 0 💬 0 📌 0

No reason to be smug ! Decartes was wrong in lots of things.

09.03.2026 07:37 👍 0 🔁 0 💬 0 📌 0
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A Brain-Invading Worm Spread By Rats and Snails Has Reached California Researchers have found evidence the rat lungworm is now endemic in southern California

Robert Francis Kennedy Jr, was in California !

gizmodo.com/a-brain-inva...

08.03.2026 07:40 👍 0 🔁 0 💬 0 📌 0
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Bal de Pourim 2026. « Pourim judéo-arabe ! » Événement : DJ set de Sharouh et lecture du récit d'Esther par Arielle WilhelmVenez déguisés, venez danser !

Is for today, 08/03/2026, (dating with Esther). In Paris.

www.mahj.org/fr/programme...

08.03.2026 07:35 👍 0 🔁 0 💬 0 📌 0
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Decoding Your Connections: Introducing Advanced DNA Comparison Explore your family history with 23andMe’s Advanced DNA Comparison. Visualize shared DNA segments and map your genealogy with precision.

Still, again, an idea for people who like "Deepen Roots".

blog.23andme.com/articles/rei...

08.03.2026 07:27 👍 0 🔁 0 💬 0 📌 0
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Introducing DNA Relatives Clustering: A New Way to Map Genetic Connections at 23andMe Discover your roots with DNA Relatives Clustering. Automatically visualize genetic connections and map complex family branches.

They (23&Me) are trying to sell a (good) idea. But (common) people is (might not be, probably), (I fear) ready to understand "Clustering" (or pay for it).

blog.23andme.com/articles/int...

08.03.2026 07:16 👍 0 🔁 0 💬 0 📌 0
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Polycomb repression works without Siesta, the Drosophila ortholog of mammalian PCGF3 - PubMed Polycomb group proteins mediate epigenetic repression via multisubunit complexes, including canonical Polycomb Repressive Complex 1 (PRC1), which monoubiquitylates histone H2A and binds histone H3 trimethylated at lysine-27 (H3K27me3). The RING1 subunit of PRC1, critical for H2A ubiquitylation, form …

To read !

pubmed.ncbi.nlm.nih.gov/41790891/

07.03.2026 08:26 👍 1 🔁 0 💬 0 📌 0
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The Moral Reasoning Gap in American Christianity How education, church attendance, and tradition shape whether Christians rely on faith or science

The proof that "Believing is Misleading". (Evangelicals, the worst).

www.graphsaboutreligion.com/p/the-moral-...

07.03.2026 08:19 👍 0 🔁 0 💬 0 📌 0
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Una IA entrenada con 128 000 especies permite diseñar genomas o predecir enfermedades El modelo Evo 2, publicado esta semana en la revista Nature, es capaz de leer y escribir el código genético de todos los dominios de la vida con una precisión superior al 90 % en la detección de mutaciones patogénicas. Es el último de un grupo de modelos que han hecho avanzar el campo de la genética generativa.

I fear that AI lacks the need (Human) imagination to predict Regulation of Gene Expression or Epigenesis.
And the role of the PRC1 and PRC2 viriations on evolutive mudulation of gene expression.

www.agenciasinc.es/Noticias/Una...

07.03.2026 07:28 👍 0 🔁 0 💬 0 📌 0
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¿Dónde están las mujeres (científicas) en las noticias? A pesar de que las mujeres sostienen casi el 40 % de la investigación en España, su voz sigue infrarrepresentada en el espacio público. Esta brecha de visibilidad no solo distorsiona la percepción del talento investigador, sino que impone un techo de cristal simbólico en el imaginario infantil, alejando a las niñas de la ciencia antes incluso de que decidan su vocación.

Tomorrow 08 / 03 / 2026. Make ♀ ♀ = ♂ ♂ (great again ? 😉😉 ).
¿Dónde están las mujeres (científicas) en las noticias?: www.agenciasinc.es/Reportajes/D...

07.03.2026 07:06 👍 0 🔁 0 💬 0 📌 0

La prière est digne des peuples comme l'Iran !

06.03.2026 17:03 👍 0 🔁 0 💬 0 📌 0
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“Que Dieu bénisse l’Amérique”: prière collective en temps de guerre à la Maison-Blanche En pleine guerre contre l’Iran, un groupe de pasteurs évangéliques a été reçu ce jeudi à la Maison-Blanche le temps d’une prière collective en compagnie de Donald Trump, <a href="https://www.lefigaro....

Comment est ce possible ?
C'est puérile, naïf et surtout Ridicule !!
www.7sur7.be/monde/que-di...

06.03.2026 17:01 👍 0 🔁 0 💬 1 📌 0
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Promoter competition and Polycomb response elements govern transvection efficiency between co-regulated engrailed and invected genes in Drosophila Transvection (or trans-activation) is a process whereby an enhancer on one chromosome activates the promoter of a gene on a paired homologous chromosome. M

Read this !

academic.oup.com/genetics/art...

06.03.2026 08:56 👍 0 🔁 0 💬 0 📌 0
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In #GENETICS, Cheng et al. show how promoter competition between engrailed and invected genes and local polycomb response elements regulate transvection efficiency and trans-activation in #Drosophila. buff.ly/dKr62KI

05.03.2026 19:05 👍 2 🔁 1 💬 0 📌 0
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Could Life on Earth Have Descended From Microbes That Traveled From Mars Long Ago? Scientists demonstrated that an Earthly extremophile might withstand being ejected from the Red Planet on debris spewed into space due to an asteroid strike

- May (Heaven willing !) this find kill the archaic, assumed, or suposed, need of an (preposterous) "Creator" !

www.smithsonianmag.com/smart-news/c...

06.03.2026 08:31 👍 0 🔁 0 💬 0 📌 0
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China's New 5-Year Plan: More AI, Less US Maybe it really is the dawning of the Chinese Century.

- From a Historic Viewpoint or Perspective, no country keeps the leader of the World for more than one or two centurys.
- The trend of the barycenter "Dawn of Power" slip, or move with the "Sunset": Westward.
- So, even if you don't like... get (or make your F1) Ready !

gizmodo.com/chinas-new-5...

06.03.2026 08:12 👍 0 🔁 0 💬 0 📌 0
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Identical twins on trial: can DNA testing tell them apart? In a French criminal trial, conventional DNA analysis couldn’t distinguish between twin brothers, but emerging scientific methods could help in such cases.

- "Conventional DNA testing of Identical Twins can't discriminate. But eventually a process called methylation, which can change how genes work, can. These ‘epigenetic’ changes can be caused by factors including a person’s behaviours".

www.nature.com/articles/d41...

06.03.2026 07:34 👍 0 🔁 0 💬 0 📌 0
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Many heat-stressed tropical insects are reaching their limits Vast study in Peru and Kenya confirms limited defenses against rising temperatures, redoubling climate concerns

- "Flies were the most sensitive".

www.science.org/content/arti...

06.03.2026 06:51 👍 0 🔁 0 💬 0 📌 0

Vinegar fly = Drosophila melanogaster.

05.03.2026 09:08 👍 0 🔁 0 💬 0 📌 0