Leo
@leogdlima.bsky.social
Mais um salvo do inferno da rede do passarinho
Reposted by Leo
Origin and evolution of acrocentric chromosomes in human and great apes https://www.biorxiv.org/content/10.64898/2025.12.22.696095v1
December 24, 2025 at 2:32 AM
Origin and evolution of acrocentric chromosomes in human and great apes https://www.biorxiv.org/content/10.64898/2025.12.22.696095v1
Reposted by Leo
If you’ve heard me talk in the past ~5 years, you will know I have developed an obsession with acrocentric chromosomes. This is all of that, condensed into one paper. I will do a full thread in the new year, but for those that want something to read over the holidays, have at it. Such a cool story!
Origin and evolution of acrocentric chromosomes in human and great apes https://www.biorxiv.org/content/10.64898/2025.12.22.696095v1
December 24, 2025 at 3:59 AM
If you’ve heard me talk in the past ~5 years, you will know I have developed an obsession with acrocentric chromosomes. This is all of that, condensed into one paper. I will do a full thread in the new year, but for those that want something to read over the holidays, have at it. Such a cool story!
Reposted by Leo
Academics and technologists are sounding the alarm about a growing crisis in scholarship as we know it: AI-generated citations of nonexistent papers that have infested real journals. Despite being fake, the sources are widely assumed to be authentic the more they appear in published literature.
AI Is Inventing Academic Papers That Don't Exist -- And They're Being Cited in Real Journals
Academic articles from authors using large language model are creating an ecosystem of fake research that threatens human knowledge itself.
www.rollingstone.com
December 17, 2025 at 7:45 PM
Academics and technologists are sounding the alarm about a growing crisis in scholarship as we know it: AI-generated citations of nonexistent papers that have infested real journals. Despite being fake, the sources are widely assumed to be authentic the more they appear in published literature.
Reposted by Leo
já vi essa notícia em vários formatos e ela me emociona sempre
não tem mais bebê nascendo com HIV no Brasil. o tamanho disso, sabe.
não tem mais bebê nascendo com HIV no Brasil. o tamanho disso, sabe.
Recebi ontem das mãos da OPAS/OMS, ao lado de Alexandre Padilha, Jarbas Barbosa e do Dr. Drauzio Varella, o certificado de eliminação da transmissão vertical do HIV, da mãe para o bebê, como problema de saúde pública.
Cuidar da vida é compromisso do nosso governo. Viva o SUS!
🎥 Ricardo Stuckert
Cuidar da vida é compromisso do nosso governo. Viva o SUS!
🎥 Ricardo Stuckert
December 19, 2025 at 4:53 PM
já vi essa notícia em vários formatos e ela me emociona sempre
não tem mais bebê nascendo com HIV no Brasil. o tamanho disso, sabe.
não tem mais bebê nascendo com HIV no Brasil. o tamanho disso, sabe.
Reposted by Leo
⚖️ Votaram contra o marco temporal:
🧑⚖️ Gilmar Mendes
🧑⚖️ Luiz Fux
🧑⚖️ Dias Toffoli
🧑⚖️ Alexandre de Moraes
🧑⚖️ Cristiano Zanin
🧑⚖️ Flávio Dino
🧑⚖️ Gilmar Mendes
🧑⚖️ Luiz Fux
🧑⚖️ Dias Toffoli
🧑⚖️ Alexandre de Moraes
🧑⚖️ Cristiano Zanin
🧑⚖️ Flávio Dino
December 17, 2025 at 7:06 PM
⚖️ Votaram contra o marco temporal:
🧑⚖️ Gilmar Mendes
🧑⚖️ Luiz Fux
🧑⚖️ Dias Toffoli
🧑⚖️ Alexandre de Moraes
🧑⚖️ Cristiano Zanin
🧑⚖️ Flávio Dino
🧑⚖️ Gilmar Mendes
🧑⚖️ Luiz Fux
🧑⚖️ Dias Toffoli
🧑⚖️ Alexandre de Moraes
🧑⚖️ Cristiano Zanin
🧑⚖️ Flávio Dino
Reposted by Leo
“A process which led from the amoeba to man appeared to the philosophers to be obviously a progress - though whether the amoeba would agree with this opinion is not known"
- Bertrand Russell, 1976.
Time-lapse video of Vampyrella lateritia eating Spirogyra algae from Science Source/Oliver Skibbe. 🦠
- Bertrand Russell, 1976.
Time-lapse video of Vampyrella lateritia eating Spirogyra algae from Science Source/Oliver Skibbe. 🦠
December 17, 2025 at 4:53 PM
“A process which led from the amoeba to man appeared to the philosophers to be obviously a progress - though whether the amoeba would agree with this opinion is not known"
- Bertrand Russell, 1976.
Time-lapse video of Vampyrella lateritia eating Spirogyra algae from Science Source/Oliver Skibbe. 🦠
- Bertrand Russell, 1976.
Time-lapse video of Vampyrella lateritia eating Spirogyra algae from Science Source/Oliver Skibbe. 🦠
Reposted by Leo
The world's richest 0.001% now control 3x as much wealth as the entire bottom half of humanity combined.
56,000 wealthy individuals have more than roughly 4 billion people.
Read that back.
56,000 wealthy individuals have more than roughly 4 billion people.
Read that back.
Just 0.001% hold three times the wealth of poorest half of humanity, report finds
Data from World Inequality Report also showed top 10% of income-earners earn more than the other 90%
www.theguardian.com
December 12, 2025 at 7:15 PM
The world's richest 0.001% now control 3x as much wealth as the entire bottom half of humanity combined.
56,000 wealthy individuals have more than roughly 4 billion people.
Read that back.
56,000 wealthy individuals have more than roughly 4 billion people.
Read that back.
Reposted by Leo
A global view of human centromere variation and evolution https://www.biorxiv.org/content/10.64898/2025.12.09.693231v1
December 12, 2025 at 3:36 AM
A global view of human centromere variation and evolution https://www.biorxiv.org/content/10.64898/2025.12.09.693231v1
Reposted by Leo
A study in Nature analyzes 154 genomes from 21 animal phyla and reconstructs ancestral adaptations to life on land across 11 distinct events, providing strong evidence of convergent genomic evolution and repeated terrestrial colonization in the animal kingdom. go.nature.com/4pHIwYF 🧪 #evolution
December 6, 2025 at 2:25 AM
A study in Nature analyzes 154 genomes from 21 animal phyla and reconstructs ancestral adaptations to life on land across 11 distinct events, providing strong evidence of convergent genomic evolution and repeated terrestrial colonization in the animal kingdom. go.nature.com/4pHIwYF 🧪 #evolution
Reposted by Leo
Researchers studied 28 new genomes from Africa and found that southern Africans were basically isolated for a long period of time. 🧪🏺
'An extreme end of human genetic variation': Ancient humans were isolated in southern Africa for nearly 100,000 years, and their genetics are stunningly different
Ancient genomes from southern Africa show that people evolved in isolation for upward of 100,000 years.
www.livescience.com
December 3, 2025 at 4:04 PM
Researchers studied 28 new genomes from Africa and found that southern Africans were basically isolated for a long period of time. 🧪🏺
Isso aqui é gigante. Um nível de ação governamental sensacional. Um processo longo de atuação do ministério da saúde que deveria servir modelo para muita coisa
Brasil elimina transmissão do HIV da mãe para o bebê
Brasil elimina transmissão do HIV da mãe para o bebê e reduz taxa de mortalidade, diz ministério
Índice de contaminação vertical ficou abaixo de 2%, interrompendo a infecção de bebês
www1.folha.uol.com.br
December 2, 2025 at 6:16 PM
Isso aqui é gigante. Um nível de ação governamental sensacional. Um processo longo de atuação do ministério da saúde que deveria servir modelo para muita coisa
Reposted by Leo
A paper in Nature shows that a 3.4-million-year-old partial foot found in Ethiopia in 2009 belongs to an ancient human relative named Australopithecus deyiremeda, a more primitive species of Australopithecus than the famous ‘Lucy’ (A. afarensis). go.nature.com/49BkCZY 🏺 🧪
November 26, 2025 at 8:47 PM
A paper in Nature shows that a 3.4-million-year-old partial foot found in Ethiopia in 2009 belongs to an ancient human relative named Australopithecus deyiremeda, a more primitive species of Australopithecus than the famous ‘Lucy’ (A. afarensis). go.nature.com/49BkCZY 🏺 🧪
Reposted by Leo
Reposted by Leo
CRISPR-Cas–mediated heritable chromosome fusions in Arabidopsis | Science www.science.org/doi/10.1126/...
Very nice work from Holger Puchta & colleagues
Very nice work from Holger Puchta & colleagues
CRISPR-Cas–mediated heritable chromosome fusions in Arabidopsis
The genome of Arabidopsis thaliana consists of 10 chromosomes. By inducing CRISPR-Cas–mediated breaks at subcentromeric and subtelomeric sequences, we fused entire chromosome arms, obtaining two eight...
www.science.org
November 20, 2025 at 8:47 PM
CRISPR-Cas–mediated heritable chromosome fusions in Arabidopsis | Science www.science.org/doi/10.1126/...
Very nice work from Holger Puchta & colleagues
Very nice work from Holger Puchta & colleagues
Coisa de mau-caratismo extremo fazer isso no dia da consciência negra. Parabéns, seu cocô
November 20, 2025 at 6:41 PM
Coisa de mau-caratismo extremo fazer isso no dia da consciência negra. Parabéns, seu cocô
Reposted by Leo
A bittersweet acceptance: Between a manuscript and grief
Stefanie Williams @sillysciencelady.bsky.social shares the story behind her paper on the synaptonemal complex, including a tribute to her supervisor Scott Hawley, who passed away while Stefanie was completing the research.
Stefanie Williams @sillysciencelady.bsky.social shares the story behind her paper on the synaptonemal complex, including a tribute to her supervisor Scott Hawley, who passed away while Stefanie was completing the research.
A bittersweet acceptance: Between a manuscript and grief - the Node
I was so excited when I received notification that my first first-author research paper was accepted. My excitement quickly turned into sadness with the realization that my co-PI was not seeing our vi...
thenode.biologists.com
November 17, 2025 at 9:58 AM
A bittersweet acceptance: Between a manuscript and grief
Stefanie Williams @sillysciencelady.bsky.social shares the story behind her paper on the synaptonemal complex, including a tribute to her supervisor Scott Hawley, who passed away while Stefanie was completing the research.
Stefanie Williams @sillysciencelady.bsky.social shares the story behind her paper on the synaptonemal complex, including a tribute to her supervisor Scott Hawley, who passed away while Stefanie was completing the research.
Reposted by Leo
Join us! 🧬🪰🎉🔬
We are currently advertising two #PhD projects to study the #evolution, #development and #genomics of sexual traits in stalk-eyed flies.
Deadline for applying is Wednesday, January 7, 2026. Get in touch for more info!
We are currently advertising two #PhD projects to study the #evolution, #development and #genomics of sexual traits in stalk-eyed flies.
Deadline for applying is Wednesday, January 7, 2026. Get in touch for more info!
November 17, 2025 at 3:58 PM
Join us! 🧬🪰🎉🔬
We are currently advertising two #PhD projects to study the #evolution, #development and #genomics of sexual traits in stalk-eyed flies.
Deadline for applying is Wednesday, January 7, 2026. Get in touch for more info!
We are currently advertising two #PhD projects to study the #evolution, #development and #genomics of sexual traits in stalk-eyed flies.
Deadline for applying is Wednesday, January 7, 2026. Get in touch for more info!
Reposted by Leo
Differential nucleosome organization in human interphase and metaphase chromosomes https://www.biorxiv.org/content/10.1101/2025.11.11.687715v1
November 13, 2025 at 3:34 AM
Differential nucleosome organization in human interphase and metaphase chromosomes https://www.biorxiv.org/content/10.1101/2025.11.11.687715v1
Reposted by Leo
Genome assemblies of Sargassum algae by Kim et al. suggest TE-driven genome size expansion, gene duplications, and salicylic acid responses, which could be mechanisms enabling adaptation to intertidal stress.
🔗 doi.org/10.1093/gbe/evaf084
#genome #TEsky #algae
🔗 doi.org/10.1093/gbe/evaf084
#genome #TEsky #algae
May 22, 2025 at 5:38 AM
Genome assemblies of Sargassum algae by Kim et al. suggest TE-driven genome size expansion, gene duplications, and salicylic acid responses, which could be mechanisms enabling adaptation to intertidal stress.
🔗 doi.org/10.1093/gbe/evaf084
#genome #TEsky #algae
🔗 doi.org/10.1093/gbe/evaf084
#genome #TEsky #algae
Reposted by Leo
Fast females, slow males: accelerated ageing and reproductive senescence in Drosophila melanogaster females across diverse social environments url: academic.oup.com/evlett/artic...
Fast females, slow males: accelerated ageing and reproductive senescence in Drosophila melanogaster females across diverse social environments
Abstract. Females and males typically differ in lifespan, patterns of ageing, and reproduction. General explanations for variation in the magnitude of this
academic.oup.com
November 9, 2025 at 8:25 PM
Fast females, slow males: accelerated ageing and reproductive senescence in Drosophila melanogaster females across diverse social environments url: academic.oup.com/evlett/artic...
Reposted by Leo
Happy to share the results of a long-haul post-doc project, now online @science.org, aiming at understanding the rules of transgeneration epigenetic inheritance over TEs in plants and its extent and impact in nature. More below!
doi.org/10.1126/scie...
doi.org/10.1126/scie...
Transposable elements are vectors of recurrent transgenerational epigenetic inheritance
DNA methylation loss at transposable elements (TEs) can affect neighboring genes and be epigenetically inherited in plants, yet the determinants and significance of this additional system of inheritan...
doi.org
September 18, 2025 at 6:35 PM
Happy to share the results of a long-haul post-doc project, now online @science.org, aiming at understanding the rules of transgeneration epigenetic inheritance over TEs in plants and its extent and impact in nature. More below!
doi.org/10.1126/scie...
doi.org/10.1126/scie...
Reposted by Leo
Are humans really the only rational animals? Our NEW PAPER 🎉 out in @science.org suggests otherwise! In a large collaboration led with my joint first author @hanna-schleihauf.bsky.social, we show that “Chimpanzees rationally revise their beliefs” 🧵
Chimpanzees rationally revise their beliefs
The selective revision of beliefs in light of new evidence has been considered one of the hallmarks of human-level rationality. However, tests of this ability in other species are lacking. We examined...
www.science.org
October 30, 2025 at 6:23 PM
Are humans really the only rational animals? Our NEW PAPER 🎉 out in @science.org suggests otherwise! In a large collaboration led with my joint first author @hanna-schleihauf.bsky.social, we show that “Chimpanzees rationally revise their beliefs” 🧵
Reposted by Leo
A new release of RepeatMasker is available. This version fixes a bug introduced in 4.2.1 that impacted the handling of poly-A tails and the naming of LINE annotations. See repeatmasker.org for more release details.
RepeatMasker Home Page
repeatmasker.org
November 3, 2025 at 6:07 PM
A new release of RepeatMasker is available. This version fixes a bug introduced in 4.2.1 that impacted the handling of poly-A tails and the naming of LINE annotations. See repeatmasker.org for more release details.
Perdemos um gênio gentil.
November 3, 2025 at 4:31 PM
Perdemos um gênio gentil.