* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Monday, October 6, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Charlie Hunnam Reflects on Playing a Serial Killer in Monster: The Ed Gein Story – Yahoo

    Charlie Hunnam Reveals the Dark Challenges of Playing a Serial Killer in Monster: The Ed Gein Story

    “Reba” cast, then and now: See the stars 24 years later (and who’s reunited for another show) – Yahoo

    “Reba” cast, then and now: See the stars 24 years later (and who’s reunited for another show) – Yahoo

    Why Taylor Swift Name-Dropped Elizabeth Taylor in Her New Album – Yahoo

    Here’s Why Taylor Swift Dropped Elizabeth Taylor’s Name in Her New Album

    Al Roker Gives Olivia Dean an Unexpected ‘New Job’ on the ‘Today’ Show – Yahoo

    Al Roker Shocks Olivia Dean with an Exciting New Role on the ‘Today’ Show

    Books about the arts and some haunts for a Denton October – Denton Record-Chronicle

    Uncover Artistic Treasures and Spooky Adventures to Experience in Denton This October

    Taylor Swift Releases New Album The Life of a Showgirl : Listen and Read the Full Credits – Yahoo

    Taylor Swift Releases New Album The Life of a Showgirl : Listen and Read the Full Credits – Yahoo

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Forget Cowbells. Cows Wear High-Tech Collars Now. – The New York Times

    Ditch the Cowbells: Discover the High-Tech Collars Transforming Cattle Care

    What the Recent Price Surge Means for Figure Technology Solutions After SEC Settlement – Yahoo Finance

    What the Recent Price Surge Reveals About Figure Technology Solutions Following SEC Settlement

    MAC Brings iPad Technology to Football Sidelines Across All 13 Member Schools – Sports Video Group

    MAC Brings iPad Technology to Football Sidelines Across All 13 Member Schools – Sports Video Group

    Technology Is Becoming More Important Than Humans In CX – No Jitter

    Technology Is Becoming More Important Than Humans In CX – No Jitter

    A Tech Expo Shows What China Can Make, but Not Who’ll Buy It All – The New York Times

    Inside China’s Tech Expo: Cutting-Edge Innovations Face Uncertain Demand

    Steampunk Metal Oval Technology Sense Sunglasses Personality Handmade Chain Multicolor Sunglasses UV400 – The San Joaquin Valley Sun

    Steampunk Metal Oval Sunglasses with Handmade Multicolor Chain – Bold UV400 Protection and Unique Style

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Charlie Hunnam Reflects on Playing a Serial Killer in Monster: The Ed Gein Story – Yahoo

    Charlie Hunnam Reveals the Dark Challenges of Playing a Serial Killer in Monster: The Ed Gein Story

    “Reba” cast, then and now: See the stars 24 years later (and who’s reunited for another show) – Yahoo

    “Reba” cast, then and now: See the stars 24 years later (and who’s reunited for another show) – Yahoo

    Why Taylor Swift Name-Dropped Elizabeth Taylor in Her New Album – Yahoo

    Here’s Why Taylor Swift Dropped Elizabeth Taylor’s Name in Her New Album

    Al Roker Gives Olivia Dean an Unexpected ‘New Job’ on the ‘Today’ Show – Yahoo

    Al Roker Shocks Olivia Dean with an Exciting New Role on the ‘Today’ Show

    Books about the arts and some haunts for a Denton October – Denton Record-Chronicle

    Uncover Artistic Treasures and Spooky Adventures to Experience in Denton This October

    Taylor Swift Releases New Album The Life of a Showgirl : Listen and Read the Full Credits – Yahoo

    Taylor Swift Releases New Album The Life of a Showgirl : Listen and Read the Full Credits – Yahoo

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Forget Cowbells. Cows Wear High-Tech Collars Now. – The New York Times

    Ditch the Cowbells: Discover the High-Tech Collars Transforming Cattle Care

    What the Recent Price Surge Means for Figure Technology Solutions After SEC Settlement – Yahoo Finance

    What the Recent Price Surge Reveals About Figure Technology Solutions Following SEC Settlement

    MAC Brings iPad Technology to Football Sidelines Across All 13 Member Schools – Sports Video Group

    MAC Brings iPad Technology to Football Sidelines Across All 13 Member Schools – Sports Video Group

    Technology Is Becoming More Important Than Humans In CX – No Jitter

    Technology Is Becoming More Important Than Humans In CX – No Jitter

    A Tech Expo Shows What China Can Make, but Not Who’ll Buy It All – The New York Times

    Inside China’s Tech Expo: Cutting-Edge Innovations Face Uncertain Demand

    Steampunk Metal Oval Technology Sense Sunglasses Personality Handmade Chain Multicolor Sunglasses UV400 – The San Joaquin Valley Sun

    Steampunk Metal Oval Sunglasses with Handmade Multicolor Chain – Bold UV400 Protection and Unique Style

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

Ancient Neanderthal DNA Shaping Modern Morning Habits

December 25, 2023
in Science
Ancient Neanderthal DNA Shaping Modern Morning Habits
Share on FacebookShare on Twitter

Neanderthal Caveman Close Up Art Illustration Concept

Recent research has uncovered a link between Neanderthal genetics and the tendency for some modern humans to be early risers. This study traces back to the interbreeding of modern humans with Neanderthals in Eurasia, suggesting that genetic variants from Neanderthals have influenced the circadian rhythms of their modern human descendants. Credit: SciTechDaily.com

A new paper in the journal Genome Biology and Evolution, published by Oxford University Press, finds that genetic material from Neanderthal ancestors may have contributed to the propensity of some people today to be “early risers,” the sort of people who are more comfortable getting up and going to bed earlier.

Human Evolution and Genetic Adaptation

All anatomically modern humans trace their origin to Africa around 300 thousand years ago, where environmental factors shaped many of their biological features. Approximately seventy thousand years ago, the ancestors of modern Eurasian humans began to migrate out to Eurasia, where they encountered diverse new environments, including higher latitudes with greater seasonal variation in daylight and temperature.

But other hominins, such as the Neanderthals and Denisovans, had lived in Eurasia for more than 400,000 years. These archaic hominins diverged from modern humans around 700,000 ago, and as a result, our ancestors and archaic hominins evolved under different environmental conditions. This resulted in the accumulation of lineage-specific genetic variation and phenotypes. When humans came to Eurasia, they interbred with the archaic hominins on the continent, and this created the potential for humans to gain genetic variants already adapted to these new environments.

Archaic Hominin Genes and Modern Human Traits

Previous work has demonstrated that much of the archaic hominin ancestry in modern humans was not beneficial and removed by natural selection, but some of the archaic hominin variants remaining in human populations show evidence of adaptation. For example, archaic genetic variants have been associated with differences in hemoglobin levels at higher altitudes in Tibetans, immune resistance to new pathogens, levels of skin pigmentation, and fat composition.

Changes in the pattern and level of light exposure have biological and behavioral consequences that can lead to evolutionary adaptations. Scientists have previously explored the evolution of circadian adaptation in insects, plants, and fishes extensively, but it is not well studied in humans. The Eurasian environments where Neanderthals and Denisovans lived for several hundred thousand years are located at higher latitudes with more variable daylight times than the landscape where modern humans evolved before leaving Africa. Thus, the researchers explored whether there was genetic evidence for differences in the circadian clocks of Neanderthals and modern humans.

Research Methodology and Findings

The researchers defined a set of 246 circadian genes through a combination of literature search and expert knowledge. They found hundreds of genetic variants specific to each lineage with the potential to influence genes involved in the circadian clock. Using artificial intelligence methods, they highlighted 28 circadian genes containing variants with potential to alter splicing in archaic humans and 16 circadian genes likely divergently regulated between present-day humans and archaic hominins.

This indicated that there were likely functional differences between in the circadian clocks in archaic hominins and modern humans. Since the ancestors of Eurasian modern humans and Neanderthals interbred, it was thus possible that some humans could have obtained circadian variants from Neanderthals.

To test this, the researchers explored whether introgressed genetic variants—variants that moved from Neanderthals into modern humans—have associations with the preferences of the body for wakefulness and sleep in large cohort of several hundred thousand people from the UK Biobank. They found many introgressed variants with effects on sleep preference, and most strikingly, they found that these variants consistently increase morningness, the propensity to wake up early. This suggests a directional effect on the trait and is consistent with adaptations to high latitude observed in other animals.

Increased morningness in humans is associated with a shortened period of the circadian clock. This is likely beneficial at higher latitudes, because it has been shown to enable faster alignment of sleep/wake with external timing cues. Shortened circadian periods are required for synchronization to the extended summer light periods of high latitudes in fruit flies, and selection for shorter circadian periods has resulted in latitudinal clines of decreasing period with increasing latitude in natural fruit fly populations.

Therefore, the bias toward morningness in introgressed variants may indicate selection toward shortened circadian period in the populations living at high latitudes. The propensity to be a morning person could have been evolutionarily beneficial for our ancestors living in higher latitudes in Europe and thus would have been a Neanderthal genetic characteristic worth preserving.

“By combining ancient DNA, large-scale genetic studies in modern humans, and artificial intelligence, we discovered substantial genetic differences in the circadian systems of Neanderthals and modern humans,” said the paper’s lead author, John A. Capra.

“Then by analyzing the bits of Neanderthal DNA that remain in modern human genomes we discovered a striking trend: many of them have effects on the control of circadian genes in modern humans and these effects are predominantly in a consistent direction of increasing propensity to be a morning person. This change is consistent with the effects of living at higher latitudes on the circadian clocks of animals and likely enables more rapid alignment of the circadian clock with changing seasonal light patterns.

“Our next steps include applying these analyses to more diverse modern human populations, exploring the effects of the Neanderthal variants we identified on the circadian clock in model systems, and applying similar analyses to other potentially adaptive traits.”

Reference: “Archaic Introgression Shaped Human Circadian Traits” by Keila Velazquez-Arcelay, Laura L Colbran, Evonne McArthur, Colin M Brand, David C Rinker, Justin K Siemann, Douglas G McMahon and John A Capra, 14 December 2023, Genome Biology and Evolution.
DOI: 10.1093/gbe/evad203

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : SciTechDaily – https://scitechdaily.com/ancient-neanderthal-dna-shaping-modern-morning-habits/

Tags: AncientNeanderthalscience
Previous Post

Regenerative Superpower Uncovered: How Jellyfish Tentacles Grow Back in Days

Next Post

Saturn’s Seasonal Spectacle: Hubble’s Ultra-Sharp Vision Unveils Ring Spoke Phenomenon

‘The World Report’ of The Church of Jesus Christ of Latter-day Saints – KSL TV 5

Inside The World Report: Exploring the Impact of The Church of Jesus Christ of Latter-day Saints

October 6, 2025
Thai Airways Launches New Premium Economy on Flights From Most Visited City in the World – Aviation A2Z

Thai Airways Launches New Premium Economy on Flights From Most Visited City in the World – Aviation A2Z

October 6, 2025
Charlie Hunnam Reflects on Playing a Serial Killer in Monster: The Ed Gein Story – Yahoo

Charlie Hunnam Reveals the Dark Challenges of Playing a Serial Killer in Monster: The Ed Gein Story

October 6, 2025
Pre-rolls, education and industry optimism: Takeaways from Ohio Cannabis Health & Business Summit 2025 – Cleveland.com

Pre-rolls, Education, and Industry Optimism: Top Insights from the Ohio Cannabis Health & Business Summit 2025

October 6, 2025
‘Rage’ politics the latest hurdle for GOP to clear; how prior battles made conservatives stronger: Dave Brat – Fox News

How ‘Rage’ Politics Is Transforming the GOP and Fueling Conservative Determination

October 6, 2025
EarthTalk – Why do eco-advocates consider backyard gardens so crucial to conservation? – Kiowa County Press

How Backyard Gardens Are Becoming the Heart of Conservation Efforts

October 5, 2025
Citizen science discovers a rare bird in town | Opinion – Times Record News

Citizen science discovers a rare bird in town | Opinion – Times Record News

October 5, 2025
Millions could be living with hidden smell loss after COVID without knowing – ScienceDaily

Millions Could Be Unknowingly Struggling with Hidden Smell Loss Following COVID

October 5, 2025
How This Influencer Lost 31 Kg By Following These 8 “Weird” Daily Habits – NDTV

How This Influencer Lost 31 Kg By Following These 8 “Weird” Daily Habits – NDTV

October 5, 2025
Forget Cowbells. Cows Wear High-Tech Collars Now. – The New York Times

Ditch the Cowbells: Discover the High-Tech Collars Transforming Cattle Care

October 5, 2025

Categories

Archives

October 2025
M T W T F S S
 12345
6789101112
13141516171819
20212223242526
2728293031  
« Sep    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (853)
  • Economy (874)
  • Entertainment (21,748)
  • General (17,435)
  • Health (9,916)
  • Lifestyle (886)
  • News (22,149)
  • People (875)
  • Politics (885)
  • Science (16,084)
  • Sports (21,374)
  • Technology (15,855)
  • World (857)

Recent News

‘The World Report’ of The Church of Jesus Christ of Latter-day Saints – KSL TV 5

Inside The World Report: Exploring the Impact of The Church of Jesus Christ of Latter-day Saints

October 6, 2025
Thai Airways Launches New Premium Economy on Flights From Most Visited City in the World – Aviation A2Z

Thai Airways Launches New Premium Economy on Flights From Most Visited City in the World – Aviation A2Z

October 6, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version