Go Back   DreamTeamDownloads1, FTP Help, Movies, Bollywood, Applications, etc. & Mature Sex Forum, Rapidshare, Filefactory, Freakshare, Rapidgator, Turbobit, & More MULTI Filehosts > World News/Sport/Weather > Earths' Enigmas/Astronomy/UFOs/Science/Health/Animals

Earths' Enigmas/Astronomy/UFOs/Science/Health/Animals Read & Enjoy Many Interesting Articles in Here About our World -From the Past, Present & Future- Astronomy, Science and Technology, Archaeology, UFOs & Animals ..

IMPORTANT ANNOUNCEMENT
Hallo to All Members. As you can see we regularly Upgrade our Servers, (Sorry for any Downtime during this). We also have added more Forums to help you with many things and for you to enjoy. We now need you to help us to keep this site up and running. This site works at a loss every month and we appeal to you to donate what you can. If you would like to help us, then please just send a message to any Member of Staff for info on how to do this,,,, & Thank You for Being Members of this site.
Post New ThreadReply
 
LinkBack Thread Tools Display Modes
Old 25-02-18, 14:05   #1
 
Ladybbird's Avatar
 
Join Date: Feb 2011
Posts: 34,897
Thanks: 23,567
Thanked 12,734 Times in 8,570 Posts
Ladybbird has a reputation beyond reputeLadybbird has a reputation beyond reputeLadybbird has a reputation beyond reputeLadybbird has a reputation beyond reputeLadybbird has a reputation beyond reputeLadybbird has a reputation beyond reputeLadybbird has a reputation beyond reputeLadybbird has a reputation beyond reputeLadybbird has a reputation beyond reputeLadybbird has a reputation beyond reputeLadybbird has a reputation beyond repute

Awards Showcase
Best Admin Best Admin Gold Medal Gold Medal 
Total Awards: 6

Earth Mysterious Origin of Horses Turned Upside Down by DNA Analysis

Mysterious Origin of Domesticated Horses ‘Turned Upside Down’ by DNA Analysis

'Our Findings Literally Turn Current Population Models of Horse Origins Upside-Down'

Independent UK, 25 Feb 2018.




The ancestors of the Przewalski's horses that inhabit Mongolia today were bred to have "leopard spot" marks on their skin Ludovic Orlando, Seas Goddard and Alan Outram
...


The horses which have long been considered ancestors of all modern domesticated steeds do in fact, belong to a totally different lineage, genetic analysis has revealed.

The oldest known domestic horse population belonged to the Botai people who inhabited the Central Asian steppes around 5500 years ago.

Until now, that population from what is now northern Kazakhstan, has been considered the likeliest source of modern domestic horses.

However, DNA analysis from both modern and ancient horses has revealed the equines we are familiar with today only share around three per cent of their ancestry with Botai horses.

Instead, the scientists were surprised to find that the Botai population actually gave rise to the Przewalksi’s horses of Mongolia.

Przewalski's horses are thought of as the only truly wild horses left in the world, but the new analysis suggests this is not the case.

Instead, this endangered population represents the last remnants of a feral population of Botai horses and the earliest descendents of domestic horses.

"Our findings literally turn current population models of horse origins upside-down,” said Professor Ludovic Orlando, a molecular archaeologist at the French National Center for Scientific Research who led the study.

“What we used to understand as the last wild horse on earth is in fact the descendant of the earliest domestic horses, which simply escaped human pressure and became feral during the last few millennia."

Besides debunking the prevalent theory of domestic horse origins, therefore, this analysis suggests there are no purely wild horses anywhere.

The results of the research conducted by Professor Orlando and his colleagues were published in the journal Science. Their analysis used genetic information from 88 horses, both ancient and modern, supported with archaeological evidence concerning the history of horse domestication.

The archaeological record provides plenty of evidence for the domestication of horses by the Botai people, who are thought to have consumed meat and milk from the animals.

“It was essential to Botai people to manage the horse resource as it provided the basis of their subsistence strategy,” said Professor Alan Outram, an archaeologist at the University of Exeter who has carried out excavations of the Botai Culture for decades.

“Probably horses were even first domesticated at Botai because horse riding somehow facilitated horse hunting."

The analysis carried out by Professor Orlando and his colleagues identified certain genetic changes that occurred when the horses returned to their wild state and eventually gave rise to Przewalski's horses.

DNA evidence revealed Botai horses had “leopard spots” on their skin, presumably an appearance their owners bred in their steeds.

However, this characteristic has been lost in the feral Przewalski's horses that exist today.

The gene responsible for this patterning was likely bred out of the population as it was also associated with night blindness – something that natural selection would have weeded out of the population.

As for the modern domestic horses, the scientists estimated they originated in 3,000 BCE at the latest. However, owing to the lack of well-preserved horse DNA from that era, their origin remains shrouded in mystery.
__________________
Nil Carborundum Illegitemi My Advice is Free My Friendship is Priceless

FREEBIES Continue to be a BURDEN on Our Increasing Server/Privacy Costs. Please DONATE Something to HELP...PM an Admin for Further Info.



& Thanks to Those That Have Taken The Time to Register & Become a Member of ... 1...
Ladybbird is online now  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Post New ThreadReply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
SEO by vBSEO 3.5.2
Designed by: vBSkinworks