Tag #Genetics

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english.elpais.com

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Aug 16, 01:18

Single Gene Transfer Creates Novel Courtship Behavior in Fruit Flies

Japanese scientists at Nagoya University transferred the courtship behavior of regurgitating food from Drosophila subobscura to Drosophila melanogaster by manipulating the fru gene, demonstrating that a single gene change can cause a significant behavioral shift between species.

Single Gene Transfer Creates Novel Courtship Behavior in Fruit Flies

Japanese scientists at Nagoya University transferred the courtship behavior of regurgitating food from Drosophila subobscura to Drosophila melanogaster by manipulating the fru gene, demonstrating that a single gene change can cause a significant behavioral shift between species.

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How does this study enhance our understanding of the genetic basis of innate behaviors and their evolution?

The study highlights the role of the fru gene in controlling courtship behaviors in fruit flies. By altering the gene's expression in specific neurons, researchers created new neural circuits responsible for the regurgitation behavior, demonstrating that relatively small neuronal changes can significantly impact behavior. This finding connects to broader understanding of behavioral evolution and the plasticity of neural circuits.

nrc.nl

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Jul 31, 19:17

Potato's Origin Traced to 9-Million-Year-Old Hybrid

A team of plant researchers discovered the potato's origins through a complex DNA analysis, tracing it back to a natural hybrid between a wild relative lacking tubers and a tomato relative approximately 9 million years ago, with the Andes Mountains providing an isolated environment for its evolution...

Potato's Origin Traced to 9-Million-Year-Old Hybrid

A team of plant researchers discovered the potato's origins through a complex DNA analysis, tracing it back to a natural hybrid between a wild relative lacking tubers and a tomato relative approximately 9 million years ago, with the Andes Mountains providing an isolated environment for its evolution...

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Zero Hunger

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What were the two parental plants involved in the creation of the potato, and what were the key genetic and environmental factors that led to its evolution?

Researchers have discovered that the potato originated from a natural cross between two plants, etuberosum (a wild relative lacking tubers) and a tomato relative, approximately 9 million years ago. This cross resulted in a new plant with tubers, enabling efficient nutrient storage and asexual reproduction, which contributed to its evolutionary success.

dailymail.co.uk

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Jul 21, 22:12

Genetic Test Accurately Predicts Childhood Obesity Risk

A new genetic test accurately predicts children's obesity risk from age 2.5, outperforming other methods and informing early interventions; it also predicts weight loss program responses in adults, potentially impacting public health strategies.

Genetic Test Accurately Predicts Childhood Obesity Risk

A new genetic test accurately predicts children's obesity risk from age 2.5, outperforming other methods and informing early interventions; it also predicts weight loss program responses in adults, potentially impacting public health strategies.

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Good Health and Well-being

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How can a new genetic test improve early intervention strategies for childhood obesity and what is its predictive accuracy compared to existing methods?

Scientists have developed a new genetic test that accurately predicts a child's obesity risk from age 2.5, exceeding the performance of other predictors. This allows for early intervention and targeted support to prevent excessive weight gain.

foxnews.com

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Jul 15, 01:15

HFE Gene Variant Linked to Increased Dementia Risk in Men

A study of 19,114 older adults revealed men with two copies of the H63D variant in the HFE gene have a significantly increased risk of developing dementia; women were unaffected; further research is needed to understand the underlying mechanisms.

HFE Gene Variant Linked to Increased Dementia Risk in Men

A study of 19,114 older adults revealed men with two copies of the H63D variant in the HFE gene have a significantly increased risk of developing dementia; women were unaffected; further research is needed to understand the underlying mechanisms.

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How might this discovery influence future dementia prevention and treatment strategies?

The research, published in Neurology, utilized data from the ASPREE trial. The heightened dementia risk in men with the double H63D variant suggests other mechanisms, possibly involving inflammation and cell damage, are at play. Further research is needed to explore these mechanisms and why women are not affected.

dailymail.co.uk

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Jul 13, 16:11

Neanderthal-Homo Sapien Hybrid Skull Found in Israel

Analysis of a 5-year-old girl's skull from Israel's Skhul Cave reveals a blend of Neanderthal and Homo sapien features, confirming interbreeding and challenging previous classifications; further examples like the Lapedo child suggest sustained intermingling.

Neanderthal-Homo Sapien Hybrid Skull Found in Israel

Analysis of a 5-year-old girl's skull from Israel's Skhul Cave reveals a blend of Neanderthal and Homo sapien features, confirming interbreeding and challenging previous classifications; further examples like the Lapedo child suggest sustained intermingling.

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How do the features of the Skhul child and the Lapedo child illuminate the processes and timelines of Neanderthal-Homo sapien interbreeding?

The Skhul girl's features, a mosaic of Neanderthal and Homo sapien characteristics, illustrate the extensive interbreeding between these groups. Further evidence from the 'Lapedo child' in Portugal, a hybrid who lived 10,000 years after Neanderthals were thought extinct, suggests sustained intermingling and gene flow between the populations.

theguardian.com

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Jul 10, 16:13

Neurobiologist Steven Rose: A Life Bridging Science, Politics, and Democratic Education

Neurobiologist Steven Rose (1938-2023), known for his reductionist research on memory and his Marxist critique of genetic determinism, pioneered democratic science education at the Open University and co-authored the influential book "Not in Our Genes.

Neurobiologist Steven Rose: A Life Bridging Science, Politics, and Democratic Education

Neurobiologist Steven Rose (1938-2023), known for his reductionist research on memory and his Marxist critique of genetic determinism, pioneered democratic science education at the Open University and co-authored the influential book "Not in Our Genes.

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What were the primary scientific and political contributions of Steven Rose's work, and what were their immediate impacts?

Steven Rose, a neurobiologist, integrated reductionist research with outspoken political activism, challenging genetic determinism and advocating for a democratic approach to science education. His work pioneered citizen science initiatives and contributed to the understanding of memory's biochemical mechanisms.

pt.euronews.com

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Aug 6, 10:19

Maternal Genetics Significantly Influences Childhood Obesity Risk

A study of 2600 British families revealed that while both parents' obesity increases a child's risk, the mother's genetics exert a wider influence on the child's BMI, impacting the child's development and health beyond directly inherited genes, highlighting the need for interventions focused on mate...

Maternal Genetics Significantly Influences Childhood Obesity Risk

A study of 2600 British families revealed that while both parents' obesity increases a child's risk, the mother's genetics exert a wider influence on the child's BMI, impacting the child's development and health beyond directly inherited genes, highlighting the need for interventions focused on mate...

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Good Health and Well-being

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What is the most significant finding regarding the influence of parental genetics on childhood obesity, and what are its immediate implications for preventative healthcare strategies?

Children of obese parents are more likely to be obese themselves, with the mother's genes playing a particularly significant role in determining children's weight, according to a new study. The study, published in PLOS Genetics, analyzed data from over 2600 British families and found that while both parents' genetics influence a child's BMI, the mother's genetic influence is broader, impacting the child's development and health even beyond genes directly inherited.

taz.de

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Jul 28, 13:17

Budgerigar Breeding: From European Challenges to Global Accessibility

Budgerigars, first bred in France in 1846, faced initial breeding challenges in Europe due to their unique nesting habits but were successfully bred by Countess von Schwerin in 1855; over-harvesting in Australia prompted an 1894 export ban, contrasting with their current low cost and accessibility.

Budgerigar Breeding: From European Challenges to Global Accessibility

Budgerigars, first bred in France in 1846, faced initial breeding challenges in Europe due to their unique nesting habits but were successfully bred by Countess von Schwerin in 1855; over-harvesting in Australia prompted an 1894 export ban, contrasting with their current low cost and accessibility.

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Life on Land

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How did the high demand for budgerigars in Europe affect their populations in Australia, and what measures were taken in response?

The high demand for budgerigars in Europe led to over-harvesting in Australia, prompting an export ban in 1894 that remains in effect. This contrasts sharply with the current low cost of budgerigars, making them accessible even to low-income individuals.

nbcnews.com

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Jul 21, 16:12

Smooth Sailing for Senate Appointees Husted and Moody

Appointees Jon Husted (Ohio) and Ashley Moody (Florida) are cruising to the Senate primaries, having secured early Trump endorsements and strong fundraising, suggesting an easy path to the 2026 general elections.

Smooth Sailing for Senate Appointees Husted and Moody

Appointees Jon Husted (Ohio) and Ashley Moody (Florida) are cruising to the Senate primaries, having secured early Trump endorsements and strong fundraising, suggesting an easy path to the 2026 general elections.

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Reduced Inequality

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How have presidential endorsements and fundraising impacted the Ohio and Florida Senate primary races?

Husted's early Trump endorsement and extensive political experience, combined with Moody's strengthened ties to Trump and substantial campaign funds, have effectively cleared the field of primary opponents in Ohio and Florida respectively. This demonstrates the significant influence of presidential endorsements and financial resources in modern political races.

sueddeutsche.de

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Jul 14, 19:13

Greenland Dog Genome Reveals Early Inuit Migration and Conservation Concerns

An international research team's genomic analysis of 92 Greenlandic sled dogs (Qimmit) reveals a two-wave migration to Greenland with Inuit people starting around 1200 years ago, challenging previous timelines and highlighting the dogs' unique genetic adaptations and conservation needs.

Greenland Dog Genome Reveals Early Inuit Migration and Conservation Concerns

An international research team's genomic analysis of 92 Greenlandic sled dogs (Qimmit) reveals a two-wave migration to Greenland with Inuit people starting around 1200 years ago, challenging previous timelines and highlighting the dogs' unique genetic adaptations and conservation needs.

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No Poverty

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What is the significance of the Greenlandic dog (Qimmit) genome analysis for understanding Inuit migration history?

An international team sequenced the genomes of 92 Greenlandic dogs (Qimmit), revealing their arrival in two waves with Inuit people around 1200 years ago, earlier than previously thought. This challenges existing timelines of Inuit migration to Greenland and highlights the dogs' unique genetic isolation since then.

dailymail.co.uk

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Jul 12, 22:10

Four Distinct Autism Subtypes Discovered, Poised to Increase Diagnoses Significantly

Princeton and Simons Foundation research identified four autism subtypes with distinct genetic 'fingerprints', potentially leading to a significant increase in diagnoses, especially among girls and those with subtle symptoms, due to improved screening and earlier detection.

Four Distinct Autism Subtypes Discovered, Poised to Increase Diagnoses Significantly

Princeton and Simons Foundation research identified four autism subtypes with distinct genetic 'fingerprints', potentially leading to a significant increase in diagnoses, especially among girls and those with subtle symptoms, due to improved screening and earlier detection.

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How will the identification of four distinct autism subtypes with unique genetic markers impact the number of autism diagnoses?

Researchers have identified four distinct autism subtypes with unique genetic fingerprints, explaining varied symptom onset and severity. This discovery could significantly increase autism diagnoses, particularly in girls and those with subtle symptoms, as earlier and more accurate identification becomes possible.

pda.kp.ru

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Jul 10, 10:13

Ancient Egyptian Potter's DNA Reveals Surprising Mesopotamian Ancestry

Genetic analysis of a 5,000-year-old Egyptian potter's remains from a necropolis near Nuwayrat revealed 80% northern African DNA and the rest from Mesopotamia, challenging previous assumptions about ancient Egyptian ancestry and highlighting social mobility.

Ancient Egyptian Potter's DNA Reveals Surprising Mesopotamian Ancestry

Genetic analysis of a 5,000-year-old Egyptian potter's remains from a necropolis near Nuwayrat revealed 80% northern African DNA and the rest from Mesopotamia, challenging previous assumptions about ancient Egyptian ancestry and highlighting social mobility.

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What does the genetic analysis of a 5,000-year-old Egyptian potter reveal about ancient Egyptian ancestry and social mobility?

A 5,000-year-old Egyptian potter's remains yielded a surprising genetic result: 80% of his DNA was from northern African populations, the rest from regions encompassing modern-day Iraq, Iran, Syria, Turkey, and the Caucasus. This suggests a significant genetic link to Mesopotamia, challenging previous assumptions about ancient Egyptian ancestry. The potter's skilled profession and elaborate burial indicate social mobility in ancient Egypt.

Showing 13 to 24 of 104 results