genetics

Forensic investigators have identified another victim of the September 11, 2001 attacks using a genetic genealogy technique being applied for the first time in the long-running effort to name those killed. The breakthrough offers hope that remaining unidentified victims of the World Trade Center collapse may still be matched to families decades later.

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.

Scientists analysing the evolutionary history of 163 ant genomes, spanning most existing subfamilies, found that periods of rapid species diversification over the past 100 million years coincided with higher activity of transposable elements — DNA sequences capable of moving around the genome. The findings suggest these mobile genetic elements played a significant role in driving the evolutionary success and variety of ants.

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 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 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.

Scientists report that biological changes can be passed down through many generations without any alteration to the DNA sequence itself, pointing to epigenetic mechanisms that carry traits beyond genetic code. The finding adds to ongoing debate about how much of inheritance depends on DNA alone, and what it means for evolution and disease research.

New research reports that autism-linked genetic variants, despite their diversity, produce effects in mouse brains that converge on just two shared molecular patterns. The finding, published by The Transmitter, suggests distinct risk genes may disrupt common biological pathways during brain development. Researchers say this convergence could help identify shared therapeutic targets for autism spectrum conditions.

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.

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.

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.

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.

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.

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.

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.

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.

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.

New reporting highlights that sex chromosomes do more than determine biological sex at birth; they continue to influence health throughout life. Researchers point to X and Y chromosome effects on disease risk, immunity and ageing, suggesting medicine should account for these genetic differences when studying and treating conditions across a patient's lifetime.

Laverock Therapeutics announced an expansion of its work into in vivo CAR-T cell therapy and broader genetic medicine, according to Cell Therapy Weekly coverage. The move signals the company's ambition to move beyond ex vivo approaches and broaden its therapeutic pipeline, drawing attention from the regenerative medicine and cell therapy community.

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.

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.

A pediatric asthma biologic drug has been found to interact with a common genetic variant in children, according to a report in Inside Precision Medicine. The finding could affect how doctors predict which young patients respond to the treatment and may prompt closer attention to genetic screening in asthma care.

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.

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.

Researchers have completed the largest-ever genetic analysis of jaguars, identifying how populations across the Americas are connected to one another. The findings reveal patterns of gene flow and isolation among jaguar groups from Mexico to Argentina, offering new insight into the species' distribution and the conservation corridors needed to protect remaining populations across their vast range.

A new story titled The Lumen Children is being shared with readers online, described as an audiobook and written work spanning science fiction and fantasy. The story's themes touch on consciousness, creativity, reality and genetic memory, and it appears to be published via the author's newsletter. Engagement so far is small, but it is circulating in art and writing communities among readers of speculative fiction.