(A) Geographic origin
of ancient horse remains (73.046 ° N, 109.708 ° E).
To place the horse evolutionary history in a chronological context, we estimated the divergence time between the ancestors
of the ancient horse population and ancestors of the modern horse populations, as well as the divergence time between the ancestors of Przewalski's horses and domesticated horses.
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.
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.
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.
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.
Last week, paleontologist identified the skeleton
of an ancient horse that was from an ice age nearly 16000 years ago.
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.»
(B) Population model assuming admixture between the descending population
of ancient horses and the population that gave rise to domesticated horses [split times in kya (Kyr)-RSB-.
The presence of these SNPs in the ancient horses implies that selection for these traits did not occur on de novo mutations but on existing variation, which was either contributed to the domesticated stock by the ancient population through admixture or was cosegregating in both the ancestors
of the ancient horses and the ancestors of the domesticated horses after their split.
Not exact matches
In fact some
of the evidence you didn't mention which was popular fodder in the past has already been proven incorrect (
horses in the americas before the spanish, and the BofM reference to elephants) Both considered ridiculous errors by Joseph Smith until elephants appeared on
ancient Mayan / Incan temples and
horses from the Brea tar pits were dated before the spanish.
If they are true believers and not riding some particular hobby
horse they must surely say that everything has remained the same that is really necessary for life as well as for death: the crucified and risen Christ, his grace, baptism, the true body and blood
of the Lord in the Eucharist, the forgiveness
of sins, the expectation
of eternal life, the
ancient dogma binding on all, the one commandment
of the love
of God and our neighbour.
You have a wealth
of knowledge available to you from centuries
of progression and you still want to cling to this
ancient, stone age
horse ****.
No golden plates, no chariots and steel and
horses in
ancient America, and the Temple in Salt Lake City is the center
of the grift universe!»
And in Doncaster, England, near - octogenarian Robert Sterling Clark wept unabashed when his
horse Never Say Die, a Kentucky - bred son
of Nasrullah, won the
ancient St. Leger before a crowd
of 200,000.
With the naked eye he saw a good
horse named Ancient Title on the lead and the 1974 Horse of the Year, Forego, saving ground by moving close to the
horse named
Ancient Title on the lead and the 1974
Horse of the Year, Forego, saving ground by moving close to the
Horse of the Year, Forego, saving ground by moving close to the rail.
Their work on
ancient DNA from Viking Age
horses is more promising: Kool and Boessenkool have collected about 100 samples, in different states
of preservation, from which they hope to build a detailed picture
of how equine populations moved and changed.
The earliest known domesticated
horses were those
of the
ancient Botai people in northern Kazakhstan (SN: 3/28/09, p. 15).
And since the cost
of genome sequencing has plummeted to one - thousandth
of its initial cost, it's clear that the Neanderthal, a 700,000 - year - old
horse and the woolly mammoth will simply be the first
of many
ancient genomes to be sequenced.
It is the latest in a series
of breakthroughs in
ancient DNA, coming just months after the sequencing
of the oldest - ever genome, from a 700,000 - year - old
horse.
Genetic data from
ancient Scythian
horses indicates that more than 2,000 years
of domestication caused changes in
horse genes related to mammary gland development and milk production.
In particular, these
ancient horses had many more varieties
of Y chromosomes and fewer harmful mutations than
horses do now.
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.
Horses» wild ancestors are also extinct, but remains from the warrior steeds of Genghis Khan and medieval knights, the Romans» chariot horses and the mounts of the ancient Scythians, Greeks and Persians might fill in gaps in horse history and prehi
Horses» wild ancestors are also extinct, but remains from the warrior steeds
of Genghis Khan and medieval knights, the Romans» chariot
horses and the mounts of the ancient Scythians, Greeks and Persians might fill in gaps in horse history and prehi
horses and the mounts
of the
ancient Scythians, Greeks and Persians might fill in gaps in
horse history and prehistory.
They compared these
ancient horse genomes with already published genomes
of 18
ancient and 28 modern
horses.
Ancient genomic changes associated with domestication
of the
horse.
The
horse fossil comes from a spot along an
ancient lakeshore where no stone tools have been found, a further clue in favor
of damage from croc bites.
Through the Pegasus project, begun in 2015, Orlando and colleagues have collected
ancient DNA from
horse fossils from a wide variety
of time periods and cultures.
In North America, the Ice Age was marked by the mass extinction
of several dozen genera
of large mammals, including mammoths, mastodons, American
horses, Western camels, two types
of deer,
ancient bison, giant beaver, giant bears, sabre - toothed cats, giant bears, American cheetahs, and many other animals, as well as plants.
New techniques and very old bones overcome the limits
of genome sequencing for prehistoric
horses,
ancient cave bears, and even our own early ancestors.
The uninterrupted freeze
of the permafrost preserved DNA in the
horse bone, but since DNA decays into smaller and less intelligible fragments over time, the specimen seemed too
ancient to analyze.
But in 2013, ultramodern DNA extraction and sequencing techniques enabled researchers to access
ancient genetic codes and translate their evolutionary tales: Researchers in Denmark reconstructed a record - breaking 700,000 - year - old
horse genome, and geneticists in Germany began parsing the DNA
of 400,000 - year - old hominids.
But a recent study
of ancient Scythian
horses showed that the winnowing
of Y chromosome types happened within the last 2,000 years, long after
horses were originally domesticated (SN: 5/27/17, p. 10).
At Al Shaqab in Doha, Qatar, science is bringing a new life to the
ancient bloodlines
of Arabian
horses — the breed that carried historical figures such as Alexander the Great, Genghis Khan, Napoleon and George Washington.
Many
of the species Darwin discovered in the fossils were previously unknown to science, including several giant ground sloths, compact car — sized relatives
of armadillos called glyptodonts (SN Online: 2/22/16) and
ancient kin
of horses and elephants.
As she pondered the nature
of this little
horse, Louise suddenly remembered seeing, on the walls
of the
ancient palace in Persepolis, relief carvings
of a
horse that looked very much like the one she had just found.
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.
By contrasting patterns
of genetic variation in
ancient and present - day
horses, the authors found support for a significant demographic collapse during the last 2,300 years, which resulted in an important reduction
of genetic diversity within
horse domesticates.
Although researchers can only speculate on what prehistoric artists were trying to express, hypotheses range from shamanistic and ritualistic activities to attempts to capture the spirit
of horses and other animals that
ancient humans hunted.
Now, a new study
of prehistoric
horse DNA concludes that spotted
horses did indeed roam
ancient Europe, suggesting that early artists may have been reproducing what they saw rather than creating imaginary creatures.
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.
This transformation left specific signatures in the genomes
of modern
horses, which the
ancient genomes helped reveal.
This is something that was only detectable in the
horse in comparison to the
ancient genomes, as Przewalski's
horses were found to show a proportion
of deleterious mutations similar to domesticated
horses.
This was apparent in the increasing levels
of inbreeding found amongst domesticates, but also through an enhanced accumulation
of deleterious mutations in their genomes relative to the
ancient wild
horses.
Lead author William Taylor, a postdoctoral research fellow at the Max Planck Institute for the Science
of Human History, says that this model «enables us for the first time to link
horse use with other important cultural developments in
ancient Mongolia and eastern Eurasia, and evaluate the role
of climate and environmental change in the local origins
of horse riding.»
Researchers have also delved into the genomes
of ancient animals — the oldest so far is a 700,000 - year - old
horse.
With this history in mind, paleogeneticist Ludovic Orlando at CNRS, the French national research agency in Toulouse, and the University
of Copenhagen decided to analyze the
ancient DNA
of these
horses.