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Tag "Evolutionary Biology"

Lucy [Falling Through] the Sky with Diamonds: Compressive fractures suggest cause of early hominin’s death

Lucy [Falling Through] the Sky with Diamonds: Compressive fractures suggest cause of early hominin’s death

🕔03:20, 24.Oct 2016

One of the oldest cold cases in history is the death of Lucy, the 3.2-million-year-old hominin. John Kappelman, who completed his undergraduate training at Yale, did some detective work on Lucy’s skeleton; an analysis of her bone fractures revealed that she may have died from falling out of a tree.

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A Real-life “Jurassic World”:  Recreating Historic Evolutionary Transitions in the Laboratory

A Real-life “Jurassic World”: Recreating Historic Evolutionary Transitions in the Laboratory

🕔02:42, 24.Oct 2016

Rather than speculate on how organisms evolved certain adaptations, scientists are attempting to recreate some of these historic transitions—such as the development of fins into feet—in the lab.

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Modern Hunter-Gatherers Reveal Strategies for Adaptive Energy Use

Modern Hunter-Gatherers Reveal Strategies for Adaptive Energy Use

🕔18:51, 10.Nov 2015

The World Health Organization attributes obesity in developed countries to decreases in exercise and energy expenditure relative to our hunter-gatherer ancestors. Where they led active lifestyles, ours are mostly sedentary. In recent research, Yale professor Brian Wood examined total energy

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Unraveling the Mysteries of Genetic Evolution: How promoter mutations may factor in

Unraveling the Mysteries of Genetic Evolution: How promoter mutations may factor in

🕔13:19, 9.May 2015

Evolution as we know it is driven by mutations in genes. But researchers at Yale were curious about what surrounds a gene. That is, how does a whole gene network evolve?

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Salmonella enterica Forego the Flagella: Yale researchers find new moves in bacterial choreography

Salmonella enterica Forego the Flagella: Yale researchers find new moves in bacterial choreography

🕔13:07, 9.May 2015

New Yale research reveals how Salmonella bacteria move when flagella are of no use, adding dimensions to our understanding of bacterial choreography.

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Science or Science Fiction? Uplifting Animals

Science or Science Fiction? Uplifting Animals

🕔22:33, 8.May 2015

Uplifting animals, or endowing animals with near-human intelligence, is a concept that has been explored by science fiction writers and movie producers. But real world scientists are interested, too. New research suggests that genetic and neurological modifications could enhance animals’ intelligence.

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New Species of Hummingbird Discovered in the Bahamas

New Species of Hummingbird Discovered in the Bahamas

🕔18:00, 8.May 2015

Through both observational and genetic methods, Teresa Feo in the department of ecology and evolutionary biology has determined that two populations of Bahama hummingbirds, previously believed to belong to the same species, are actually two distinct species.

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The Pregnancy Puzzle: Genomic analysis reveals the evolutionary origin of the womb

The Pregnancy Puzzle: Genomic analysis reveals the evolutionary origin of the womb

🕔22:46, 29.Mar 2015

Placental pregnancy is a radical phenotype which arose only once in evolutionary history. Professor Günter Wagner and colleagues have conducted genome-wide analysis on cells from an array of pregnant animals to reveal that ancient transposable elements were the likely vehicles for the origin of this mammalian trait.

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Returning to Darwin’s Finches: A genetic explanation for his observations of bird beaks

Returning to Darwin’s Finches: A genetic explanation for his observations of bird beaks

🕔19:34, 29.Mar 2015

Genomic analysis of finch species from the Galapagos archipelago and Cocos islands reveals a genetic basis for the beak diversity studied by the father of evolution.

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Turned Tortoise: Shell geometry helps tortoises get back on their feet

Turned Tortoise: Shell geometry helps tortoises get back on their feet

🕔22:19, 5.Mar 2015

Turning over is neither easy nor trivial for a belly-up tortoise — lying flipped over on its shell makes the reptile vulnerable to predation, among other hazards. According to a new study conducted at the University of Belgrade, certain types of tortoises may have an advantage in this situation depending on the geometry and size of their shells. In addition, researchers have investigated the evolutionary trade-offs of these ideal shell shapes.

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