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Population bottlenecks that reduced genetic diversity were common throughout human history

A new analysis of ancient and contemporary genomes shows that more than half of historical groups experienced founder events, leading to reduced genetic diversity. This research has significant implications for scientists studying human genetic variation and the discovery of disease-causing mutations.

SourceUniversity of California - Berkeley·JournalPLOS Genetics·TypeData/statistical analysis·DateJun 23, 2022

Fernandina Island Galapagos giant tortoise is not extinct

A Galapagos giant tortoise species previously believed to be extinct has been confirmed to still exist, thanks to genetic research that sequenced the genome of a single specimen and compared it with living individuals. The study's findings offer hope for the recovery of this species.

SourceNewcastle University·JournalCommunications Biology·TypeComputational simulation/modeling·DateJun 9, 2022

Hybrid strains make insidious parasite more dangerous

Researchers at Karolinska Institutet have mapped the formation of hybrid strains in Trypanosoma cruzi, a parasite causing chronic infection and severe symptoms. These hybrids are more effective at evading the immune system and causing disease, but understanding their formation can help develop new diagnostic and treatment methods.

SourceKarolinska Institutet·JournaleLife·DateMay 10, 2022

Scientists announce comprehensive regional diagnostic of microbial ocean life using DNA testing

Researchers developed a comprehensive regional diagnostic method using DNA testing, allowing for precise identification of microorganisms and estimation of their abundance. The technique has the potential to revolutionize our understanding of the ocean's food web and its role in removing greenhouse gases.

SourceUniversity of California - San Diego·JournalNature Communications·TypeMeta-analysis·DateMay 4, 2022

Repeats are key to understanding humanity's genome

Researchers fill in gaps in Human Reference Genome, discovering repetitive sections are a major source of human variation and genetic diversity. The Telomere-2-Telomere project reveals complex architectural features with significant consequences for understanding human evolution and biological function.

SourceUniversity of Connecticut·JournalScience·TypeData/statistical analysis·DateMar 31, 2022

First complete human genome poised to strengthen genetic analysis, NIST study shows

The T2T consortium's completed human genome has shown significant improvements in DNA sequencing accuracy, correcting tens of thousands of errors and revealing millions of genetic variations. This new reference genome can support the analysis of over 200 genes of medical relevance, potentially propelling research into genetic disorders.

Sex pays off

Research shows that asexual reproduction in stick insects, such as parthenogenesis, reduces genetic variability and slows down adaptation to environmental changes. This negatively impacts the speed of adaptation and genetic diversity in these insects.

SourceUniversity of Cologne·JournalScience Advances·TypeObservational study·DateFeb 24, 2022

New “vertical map” of airborne microorganisms indicates how global warming will impact global ecosystems

A comprehensive 'vertical map' of airborne microorganisms has been created, showing that temperature is the single most important factor influencing their composition. As global temperatures rise, this could lead to significant changes in the air microbiome, affecting human health and food security.

SourceNanyang Technological University·JournalProceedings of the National Academy of Sciences·DateFeb 7, 2022

First U.S. peer-reviewed study on omicron patient outcomes reveals rapid spread and significant differences in infection behavior

The first US peer-reviewed study on omicron patient outcomes found significant differences in infection behavior. Ominron patients are significantly younger, have increased vaccine breakthrough rates, and are less likely to be hospitalized compared to patients with alpha or delta variants.

SourceHouston Methodist·JournalAmerican Journal Of Pathology·TypeData/statistical analysis·DateFeb 3, 2022

Plants as cold specialists from the Ice Age

A team of evolutionary biologists and botanists found that the spoonweed genus, which emerged as a cold specialist during the Ice Age, repeatedly adapted to rapidly alternating cold and warm periods. The researchers identified physiological adaptations to drought and salt stress that helped the plants develop high tolerance to cold.

SourceHeidelberg University·JournaleLife·DateDec 21, 2021

Using genomics to match treatments improved outcomes for certain patients with metastatic breast cancer

The study used multigene sequencing to identify genomic alterations in patients with metastatic breast cancer. Patients with genomic alterations ranked as ESCAT I/II saw improved progression-free survival with targeted therapies matched to their genomic changes, while those without these alterations did not benefit from the treatment.

The genomes of Mexico's native peoples reveal evolutionary adaptations and challenges to global change

Researchers analyzed the genome of 300 individuals from 15 Mexican ethnic groups to understand their evolutionary histories and adaptability to global changes. The study found that Native Mexican peoples have biological characteristics influenced by their complex history, including susceptibility to certain diseases.

SourceUniversità di Bologna·JournalMolecular Biology and Evolution·DateNov 3, 2021

Artificial intelligence-based technology quickly identifies genetic causes of serious disease

A new AI-powered algorithm, GEM, has been developed to quickly identify genetic causes of serious disease in newborns. The technology leverages machine learning and natural language processing to analyze vast amounts of genomic data and clinical records, achieving an accuracy rate of 92% compared to existing tools.

SourceUniversity of Utah Health·JournalGenomic Medicine·TypeData/statistical analysis·DateOct 13, 2021

Darwin’s short-beak enigma solved

A study by University of Utah biologists discovered a mutation in the ROR2 gene is linked to short beak length in domestic pigeons. This mutation also underlies the human disorder Robinow syndrome, which shares striking facial features with the pigeon phenotype.

SourceUniversity of Utah·JournalCurrent Biology·TypeExperimental study·DateSep 21, 2021

After 10,000 years of inbreeding, endangered flightless parrots from New Zealand are in surprisingly good genetic health

Despite 10,000 years of inbreeding, the kākāpō genome sequencing reveals that the species has lost potentially deleterious mutations and now carries fewer harmful mutations than extinct mainland populations. This finding suggests that natural selection may have facilitated genetic purging in small populations.

SourceCell Press·JournalCell Genomics·TypeComputational simulation/modeling·DateSep 8, 2021

Geneticists map the rhinoceros family tree

Researchers have helped fill gaps in the rhino evolutionary family tree by analyzing genomes of living and extinct species, finding that African and Eurasian lineages separated 16 million years ago and that low genetic diversity is a natural state for rhinoceroses, not a consequence of recent population declines

SourceCell Press·JournalCell·TypeObservational study·DateAug 24, 2021