genetics

New York City officials have identified a victim of the September 11, 2001 attacks using a first-of-its-kind genetic genealogy technique, according to ABC News. It marks the first time this advanced DNA method has produced an identification from the 9/11 remains, more than two decades after the attacks, as the medical examiner's office continues working to name victims.

New York Times science reporting describes a virus, identified in connection with molluscum contagiosum, that has incorporated a human gene into its own genome and retained it over time. The finding sheds light on how viruses and their hosts exchange genetic material over evolutionary timescales. Readers on Hacker News are actively discussing the evolutionary implications and the mechanisms by which such gene theft could occur.

Researchers at the University of Arizona report that sex chromosomes do more than determine biological sex: they actively influence how the body handles cancer, cardiovascular disease and ageing. The findings suggest that differences in disease risk and lifespan between men and women may be rooted in genetic mechanisms, which could shape future research and treatment approaches.

A Nature publication argues that neutrality should serve as the null hypothesis in biological evolution research, framing debates over how much genetic change is driven by neutral processes versus selection. The piece revisits the long-running discussion sparked by Motoo Kimura's neutral theory, prompting researchers to weigh when claims of adaptation are justified and when random drift offers a simpler explanation.

A widely shared post highlights fetal microchimerism: during pregnancy, fetal cells cross into the mother's body and can persist for decades. The author notes that even a miscarriage over 20 years ago may have left that embryo's genetic material in her body, which she could potentially pass on. Readers are engaging with the surprising biology behind it.

New research reported by The Transmitter indicates that multiple genetic variants associated with autism produce effects in mouse brains that converge on just two shared molecular patterns. The finding suggests that despite autism's genetic heterogeneity, different risk variants may disrupt common biological pathways, offering researchers a simplified framework for understanding the condition's molecular basis.

Researchers using molecular clock analysis, which estimates evolutionary timelines from genetic mutations, have proposed that animals may have originated roughly 200 million years earlier than the fossil record previously indicated. The finding, reported by Live Science, is drawing attention for potentially rewriting a key chapter in the history of life on Earth, as it pushes animal emergence far deeper into geological time than established views.

The FDA plans to highlight aging and longevity medicine in upcoming updates to the Federal Acquisition Regulation Supplement (FARS), according to a report by Genetic Engineering and Biotechnology News. The move signals growing regulatory attention to treatments targeting aging itself rather than individual age-related diseases, a field attracting increased investment and research interest.

The University of Missouri has announced the launch of a Center for Translational Neurogenetics, a new research center focused on connecting genetic discoveries to treatments for neurological conditions. The university says the center aims to move laboratory findings in neurogenetics toward clinical applications. Details on funding, leadership and specific research programs were not included in the initial announcement.

A scientific journal has launched a new section examining epigenetics through the lens of ethics and society, according to Bioengineer.org. The section is framed as putting the field 'on trial', weighing how epigenetic research intersects with questions of responsibility, social policy and scientific interpretation. The report drew little visible engagement so far, but signals growing editorial interest in the social implications of epigenetics.

New attention is turning to the role of sex chromosomes beyond determining biological sex. Reporting highlights that the X and Y chromosomes influence how cells age and how the body fights disease, suggesting that sex-linked genetics affect health outcomes throughout life. The finding underscores growing scientific interest in how sex chromosomes shape aging and immunity, and why medical research increasingly treats sex as a biological variable.

Researchers have used genome editing to identify a genetic switch in alfalfa that controls the plant's response to drought. The finding could help breeders develop alfalfa varieties that stay productive under water stress, with implications for livestock feed and agriculture in drought-prone regions.

A widely shared science documentary claims researchers compared Jewish genetic profiles against DNA from ancient civilizations and found only one match, pointing to a single ancestral origin. The claim has drawn large attention, with viewers debating which population was identified and how genetics aligns with historical records of Jewish origins in the ancient Near East.

Scientists have sequenced the amphioxus genome, a close living relative of vertebrates, and found unusually high heterozygosity — large genetic differences between chromosome pairs. The extreme variation allowed researchers to study recombination patterns and genome evolution in fine detail, offering clues about how genetic shuffling works and how it shaped the ancestors of all vertebrates, including humans.

Colossal Biosciences, the de-extinction company, says promptable biology — the ability to direct biological systems much like prompting software — will become practical within a decade. The claim frames its genetic engineering and species-revival work as a step toward programmable life sciences. Reaction so far is limited, with no independent assessment of the timeline available.

Scientific American examines whether genetically engineered microbes could make Mars more habitable. The idea is that bacteria might be used to produce gases or nutrients that warm the planet or enrich its soil, offering a biological route to terraforming. Researchers weigh whether such organisms could survive Mars's harsh radiation, cold and thin atmosphere, or whether the concept remains speculative.

Harvard Medical School has announced that Susan Dymecki will serve as the next chair of its Department of Genetics. Dymecki, a developmental neurobiologist known for her work on genetic mouse models, takes over leadership of one of the school's major basic science departments. The announcement is drawing attention from researchers and academics following the institutional news.

The FDA plans to use an upcoming FARS update to emphasize aging and longevity medicine, signaling growing regulatory attention to treatments targeting age-related disease. The move was reported by Genetic Engineering and Biotechnology News. Observers see it as a sign that longevity science is moving closer to mainstream regulatory priorities, with implications for drug developers and biotech firms working on aging-related therapies.

Researchers have identified specific neurons in mice that generate anxiety following exposure to cannabinoid drugs. The finding, reported by Genetic Engineering and Biotechnology News, offers a biological explanation for the anxiety side effects some cannabis users experience. The work may help guide development of cannabinoid-based therapies that avoid triggering anxious responses, as debate continues over medicinal cannabis use.

Ben Lamm, head of biotech startup Colossal Biosciences, gave an interview to CNBC about the company's work on de-extinction — using genetic engineering and artificial intelligence in efforts to bring back extinct species such as the woolly mammoth. The discussion covered how AI accelerates genome analysis and the scientific and ethical questions surrounding reviving lost species.

A man has been convicted of the violent murder of an Arizona woman after investigators used familial DNA searching, a technique that matches crime scene evidence to relatives of people in DNA databases. The case highlights how forensic genealogy is increasingly being used to close cold cases and identify suspects who avoided direct database matches.

A new discussion of epigenetics is reviving the classic nature-versus-nurture argument about whether genes or environment shape who we are. The piece argues that the epigenome, the system of chemical marks that switches genes on and off, shows the two forces are intertwined rather than opposed. Environmental factors such as stress, diet and pollution can leave heritable marks on DNA, complicating older genetic determinism. The debate continues to fascinate scientists and the public alike.

Scientists are highlighting a subtle chemical distinction between RNA and DNA that could shed light on how life first emerged on Earth. The difference may explain why RNA, not DNA, likely served as the earliest genetic material, a central idea in origin-of-life research. The finding is being picked up by science news outlets and is prompting renewed discussion about the RNA world hypothesis.

A study published in Nature examined how genetic vulnerability and physical activity interact in relation to major depressive disorder, using data from the All of Us Research Program, a large US biomedical database. The findings add to ongoing discussion about how lifestyle factors such as exercise may influence depression risk in people with genetic predisposition.