Tag #Genetics

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Jul 9, 16:15

Four Distinct Autism Subtypes Discovered, Unlocking Targeted Treatments

A Princeton University and Simons Foundation study identified four distinct autism subtypes based on behavior and genetics, impacting diagnosis and treatment; genetic mutations before or after birth affect subtypes, potentially leading to targeted therapies.

Four Distinct Autism Subtypes Discovered, Unlocking Targeted Treatments

A Princeton University and Simons Foundation study identified four distinct autism subtypes based on behavior and genetics, impacting diagnosis and treatment; genetic mutations before or after birth affect subtypes, potentially leading to targeted therapies.

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What are the potential long-term implications of this research for autism diagnosis, treatment, and personalized care?

This research significantly advances autism understanding by linking specific genetic profiles to diverse clinical presentations. The findings suggest that future treatments could be tailored to specific subtypes, leading to more effective interventions. Moreover, understanding the timing of genetic switches could enhance early diagnosis and personalized care.

dw.com

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Jul 6, 10:10

Ancient DNA Reveals Late Arrival of Light Pigmentation in Europe

Genetic analysis of 348 ancient DNA samples reveals that light skin, hair, and eyes were rare in Europe until the Iron Age; light skin may have offered a vitamin D advantage, while light eyes' evolutionary benefit remains unclear.

Ancient DNA Reveals Late Arrival of Light Pigmentation in Europe

Genetic analysis of 348 ancient DNA samples reveals that light skin, hair, and eyes were rare in Europe until the Iron Age; light skin may have offered a vitamin D advantage, while light eyes' evolutionary benefit remains unclear.

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What potential evolutionary advantages might explain the emergence of light skin in Europe, and how do these advantages compare to those for light eyes?

The research suggests light skin may have offered an evolutionary advantage in areas with less sunlight, allowing for increased vitamin D synthesis crucial for bone and muscle health. However, light eye color's evolutionary benefit remains unclear, potentially arising from genetic drift or sexual selection. The prevalence of light features increased significantly in Northern Europe around 3,000 years ago.

elpais.com

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Jun 22, 07:15

Spanish Study to Investigate the Secrets of Extreme Longevity

The Spanish Society of General and Family Physicians (SEMG) is initiating a study of 2,000 Spanish centenarians to analyze their biology, lifestyle, and genetics to understand extreme longevity, with sample collection beginning around September after ethical approval.

Spanish Study to Investigate the Secrets of Extreme Longevity

The Spanish Society of General and Family Physicians (SEMG) is initiating a study of 2,000 Spanish centenarians to analyze their biology, lifestyle, and genetics to understand extreme longevity, with sample collection beginning around September after ethical approval.

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What are the key factors being investigated in the SEMG's study of Spanish centenarians, and what immediate implications could the research have for public health?

The Spanish Society of General and Family Physicians (SEMG) is launching a study to analyze the biology and lifestyle habits of 2,000 centenarians to understand the factors contributing to extreme longevity. Researchers will collect samples (saliva, feces, hair, nails, mucosa, and blood) and analyze lifestyle data, aiming to identify genetic and environmental factors determining exceptional lifespan. This builds upon previous research, revealing common traits among centenarians such as a healthy diet, social connections, and avoidance of smoking.

english.elpais.com

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Jun 18, 22:15

Dragon Man" Skull Reclassified as Denisovan, Reshaping Human Evolution Understanding

New DNA and protein analysis reveals the 146,000-year-old "dragon man" skull (initially classified as Homo longi) is a Denisovan, challenging previous human evolution theories and offering insights into Denisovan morphology and geographic distribution across Asia.

Dragon Man" Skull Reclassified as Denisovan, Reshaping Human Evolution Understanding

New DNA and protein analysis reveals the 146,000-year-old "dragon man" skull (initially classified as Homo longi) is a Denisovan, challenging previous human evolution theories and offering insights into Denisovan morphology and geographic distribution across Asia.

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What are the broader implications of the Harbin skull discovery for understanding the distribution and adaptation of Denisovans across Asia?

The study connects the Harbin skull to other fossils in Asia, suggesting that Denisovans were widespread and adapted to diverse environments. Genetic evidence supports interbreeding between Denisovans, Neanderthals, and Homo sapiens, impacting our understanding of human evolution.

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Jun 8, 01:10

Ancient Colombian Skeletons Reveal Extinct Human Lineage and Population Replacement

Archaeologists in Colombia discovered 6,000-year-old skeletons near Bogotá, revealing a unique, now-extinct lineage of hunter-gatherers genetically isolated for millennia and unrelated to modern Indigenous groups; around 2,000 years ago, they were replaced by migrants from Central America.

Ancient Colombian Skeletons Reveal Extinct Human Lineage and Population Replacement

Archaeologists in Colombia discovered 6,000-year-old skeletons near Bogotá, revealing a unique, now-extinct lineage of hunter-gatherers genetically isolated for millennia and unrelated to modern Indigenous groups; around 2,000 years ago, they were replaced by migrants from Central America.

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How did the cultural and linguistic landscape of the Bogotá highlands transform around 2,000 years ago, and what evidence supports the hypothesis of migration from Central America?

Analysis of ancient DNA from 21 individuals at Checua spanning six millennia demonstrates a complete population replacement around 2,000 years ago. The original lineage vanished, replaced by a group with genetic links to Panama and modern Chibchan speakers, suggesting migration from Central America and the introduction of Chibchan languages and Herrera culture.

jpost.com

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Jun 4, 13:13

Ancient Colombian Genome Reveals Mysterious Disappeared Population

Researchers discovered the genetic remains of an unknown ancient human population in central Colombia's Altiplano plateau, dating back 6,000 years, whose genetic lineage vanished completely by 2,000 years ago, leaving no descendants among later populations and raising questions about early South Ame...

Ancient Colombian Genome Reveals Mysterious Disappeared Population

Researchers discovered the genetic remains of an unknown ancient human population in central Colombia's Altiplano plateau, dating back 6,000 years, whose genetic lineage vanished completely by 2,000 years ago, leaving no descendants among later populations and raising questions about early South Ame...

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What factors might explain the complete disappearance of the ancient hunter-gatherer population's genetic lineage in the region?

The study analyzed DNA from 21 individuals from five archaeological sites in central Colombia. Around 2,000 years ago, a new group arrived, possessing advanced agricultural and pottery skills, and possibly introducing Chibchan languages. The complete absence of the original population's genetic material in later samples is unusual and unexplained.

zeit.de

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Jul 8, 07:16

Infant Crying Duration Largely Genetically Determined: Twin Study

A Swedish twin study found that up to 70 percent of infant crying duration is genetically determined by the time babies reach five months old, while nighttime wakings and calming ability are less genetically influenced. The study used questionnaires from parents of 998 twins.

Infant Crying Duration Largely Genetically Determined: Twin Study

A Swedish twin study found that up to 70 percent of infant crying duration is genetically determined by the time babies reach five months old, while nighttime wakings and calming ability are less genetically influenced. The study used questionnaires from parents of 998 twins.

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How did the study design account for environmental factors influencing infant crying behavior, and what limitations were acknowledged?

The Uppsala University research used twin pairs to control for environmental factors like family dynamics and socioeconomic status, focusing on crying duration, nighttime wakings, and calming time. Identical twins showed more similarity in crying than fraternal twins, indicating a strong genetic component. However, the study acknowledges limitations due to parental reporting and potential twin interaction effects.

nos.nl

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Jul 3, 19:18

Ancient Egyptian Genome Reveals Mesopotamian Ancestry

Analysis of a 4,500-4,800-year-old Egyptian man's genome revealed approximately 20% Near Eastern DNA, suggesting ancient interactions between Egypt and Mesopotamia and highlighting the potential of advanced DNA sequencing techniques.

Ancient Egyptian Genome Reveals Mesopotamian Ancestry

Analysis of a 4,500-4,800-year-old Egyptian man's genome revealed approximately 20% Near Eastern DNA, suggesting ancient interactions between Egypt and Mesopotamia and highlighting the potential of advanced DNA sequencing techniques.

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What is the significance of the complete genome sequencing of an ancient Egyptian individual, and what immediate implications does it have for our understanding of ancient populations?

Scientists have sequenced the complete genome of an ancient Egyptian man, revealing approximately 20% of his DNA originated from the Near East, suggesting intermingling between ancient Egypt and Mesopotamia. This finding supports previous archeological hints, although researchers emphasize the need for more analyses before drawing broader conclusions.

foxnews.com

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Jun 19, 13:15

Genetic Factors Significantly Influence Weight Loss Response to Healthy Diets

A new study involving 761 Israeli adults with abdominal obesity found that despite following various healthy diets for 18-24 months, 28% experienced no weight loss, yet still showed significant improvements in cardio-metabolic health, suggesting that genetic factors play a significant role in weight...

Genetic Factors Significantly Influence Weight Loss Response to Healthy Diets

A new study involving 761 Israeli adults with abdominal obesity found that despite following various healthy diets for 18-24 months, 28% experienced no weight loss, yet still showed significant improvements in cardio-metabolic health, suggesting that genetic factors play a significant role in weight...

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What are the potential implications of this research for future obesity treatment strategies, considering genetic predispositions and personalized approaches?

Future research should focus on understanding the genetic markers influencing weight-loss resistance and tailoring interventions accordingly. This personalized approach, combining genetic analysis with lifestyle changes and potentially medication, may maximize weight loss and health improvements for individuals with diverse genetic predispositions. The study's findings offer hope, reframing success beyond weight loss alone.

es.euronews.com

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Jun 13, 10:12

Twin Study Reveals Genetic Influence on Psychological Disorder Risk

A study of nearly 22,000 identical twins published in 'Nature Human Behaviour' found that genes influence responses to life experiences, increasing or decreasing the risk of disorders like anxiety, depression, and ADHD; researchers used identical twins' shared genetics to isolate environmental impac...

Twin Study Reveals Genetic Influence on Psychological Disorder Risk

A study of nearly 22,000 identical twins published in 'Nature Human Behaviour' found that genes influence responses to life experiences, increasing or decreasing the risk of disorders like anxiety, depression, and ADHD; researchers used identical twins' shared genetics to isolate environmental impac...

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How did the researchers utilize identical twins to differentiate the impact of genetics and life experiences on mental health outcomes?

The study utilized identical twins, sharing nearly identical genetic codes, to isolate the interaction between DNA and lived experiences on mental well-being. Differences in twins' mental health outcomes were attributed to their unique life experiences, while similarities highlighted the influence of shared genetic predispositions.

usa.chinadaily.com.cn

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Jun 7, 04:11

Ancient DNA Reveals 4,500-Year-Old Matrilineal Society in China

Chinese scientists discovered a matrilineal society in East China's Fujia site (2750-2500 BC), challenging existing theories and pushing the earliest known matrilineal society back by over 1500 years, according to a Nature publication.

Ancient DNA Reveals 4,500-Year-Old Matrilineal Society in China

Chinese scientists discovered a matrilineal society in East China's Fujia site (2750-2500 BC), challenging existing theories and pushing the earliest known matrilineal society back by over 1500 years, according to a Nature publication.

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How did the researchers utilize DNA analysis to confirm the matrilineal nature of the two communities at the Fujia site, and what specific methods were employed?

The research analyzed DNA from 60 individuals from two separate cemeteries at the Fujia archaeological site. Mitochondrial DNA analysis revealed two distinct maternal lineages, each with nearly identical sequences within their respective groups, indicating a strong matrilineal structure within these communities.

elpais.com

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May 30, 04:11

Ancient Leprosy in the Americas Predates European Colonization

A new study published in Science reveals that leprosy bacteria (Mycobacterium lepromatosis) existed in the Americas for over 1,000 years before European arrival, challenging previous assumptions about the disease's introduction to the continent and indicating its spread across the Americas via unkno...

Ancient Leprosy in the Americas Predates European Colonization

A new study published in Science reveals that leprosy bacteria (Mycobacterium lepromatosis) existed in the Americas for over 1,000 years before European arrival, challenging previous assumptions about the disease's introduction to the continent and indicating its spread across the Americas via unkno...

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How did the M. lepromatosis lineage spread so rapidly across the Americas before European contact, and what are the potential mechanisms of transmission?

The study, involving over 800 samples and 40 scientists, established two distinct leprosy lineages. One lineage, M. lepromatosis, existed in the Americas for over a millennium before European contact, spreading rapidly across the continent. This challenges the belief that Europeans introduced leprosy to the Americas. The other lineage arrived with European colonizers.

Showing 25 to 36 of 104 results