Sentences with phrase «ancient horses»

If humans adapt to the impending temperature rise in a similar manner as ancient horses, we'll wind up just a few feet tall.
When ancient horses diversified into new species, those bursts of evolution weren't accompanied by drastic changes to horse teeth, as scientists have long thought.
To investigate the history of domestic horses with respect to this charismatic phenotypic character, the scientists analysed a dataset of 201 samples of ancient horse DNA.
ANC, ancient horse population; DOM, population of domesticated horses; PRZ, Przewalski's horse population.
Genomes from ancient horses show the genetic changes wrought by domestication — and their costs.
Such is the case with an extensive new study of ancient horse DNA, which largely disproves the current theory: that modern horses arose more than 5000 years ago in Kazakhstan.
«While previous DNA studies have produced evidence for bay and black horses, our study has demonstrated that the leopard complex spotting phenotype was also already present in ancient horses and was accurately depicted by their human contemporaries nearly 25,000 years ago.»
But a new genetic analysis of ancient horse bones suggests that these horses have a tamed ancestor after all, making them feral rather than wild.
The mitochondrial genome sequences of the two ancient horses clustered within the extensive diversity present in modern horses, as previously reported (9, 12, 25).
HORSE RACE As ancient horses rapidly diversified into new species, drastic changes in body size didn't occur, despite the diversity found in the fossil record, a new analysis shows.
Indeed, in a 2009 analysis of DNA from the bones of nearly 90 ancient horses dated from about 12,000 to 1000 years ago, researchers found genetic evidence for bay and black coat colors but no sign of the spotted variety, suggesting that the spotted horse could have been the figment of some artist's imagination.
Whole genome sequencing of modern and ancient horses unveils the genes that have been selected by humans in the process of domestication through the latest 5,500 years, but also reveals the cost of this domestication.
«Exquisite ancient horse fossil preserves uterus with unborn foal.»
This part of EX Ancient Horse Rumors quest isn't located too far from where you found the journal at the start of this quest.
Subsequent genetic studies have supported the NCC deficit hypothesis, most recently an April report in Science on the sequencing of 14 ancient horse genomes up to 4,100 years old; that's close to the estimated dawn of domesticated horses some 5,500 years ago.
On a trip to collect DNA samples from ancient horse bones in Mongolia, Orlando got a whole new perspective on domestication.
This ancient horse was discovered in Levi, Utah — an unexpected find given that the majority of the state was -LSB-...]
Last week, paleontologist identified the skeleton of an ancient horse that was from an ice age nearly 16000 years ago.
These include the ancient pigs Desmathyus and Prosthenops, the horned artiodactyl Prosynthetoceras, an ancient elephant - like animal known as a gomphothere, and perhaps the ancient horse Merychippus.
In particular, these ancient horses had many more varieties of Y chromosomes and fewer harmful mutations than horses do now.
But the ancient horses didn't have those mutations, indicating that those DNA changes happened sometime within the last 2,300 years.
Genetic results from the ancient horses provide evidence that the hypothesis might be true, says Frantz.
Ancient horses had a lot of toes to lose.
They compared these ancient horse genomes with already published genomes of 18 ancient and 28 modern horses.
But when Orlando and colleagues examined DNA of ancient horses, they found that the story started completely differently.
More than 500 footprints of ancient horses, rhinos, birds and other animals dotted the area around the hominid tracks.
Importantly, none of the ancient horses analyzed in the study were inbred, which suggests that Scythian breeders succeeded in maintaining natural herd structures and did not perform selection through a limited number of valuable lineages.
We therefore decided to sequence the genome of ancient horses that lived prior to domestication to directly assess how pre-domesticated horses looked like genetically.»
This suggests that restocking from a wild population descendant from the ancient horses occurred during the domestication processes that ultimately led to the modern domesticated horses.
The scientists were able to detect a set of 125 candidate genes involved in a wide range of physical and behavioral traits, by comparing the genomes of the two ancient horses with those of the Przewalski's horse and five breeds of domesticated horses.
As for what the ancient horse looked like, Willerslev says that he was large but not as tightly muscled as a modern horse.
He and an international team of colleagues then set about scouring the fragment for any trace of collagen or other material that could harbor the ancient horse's DNA.
Genes that are involved in immunity, the sense of smell, and muscle development have all changed significantly since this ancient horse roamed the Yukon, Willerslev says.
The sequenced genome offers a glimpse at the ancient horse and how equine genes have evolved.
The team compared the ancient horse DNA to that of five domestic breeds, plus a donkey and the Przewalski's horse — a wild species found in Mongolia.
A specimen of the ancient horse Eurohippus messelensis has been discovered in Germany that preserves a fetus as well as parts of the uterus and associated tissues.
a b c d e f g h i j k l m n o p q r s t u v w x y z