返回列表 回复 发帖
本帖最后由 红山人 于 2018-6-12 08:45 编辑

K2的时候 阿富汗人 巴基斯坦人高频出现的成分 在韩人中极微弱出现 但在苗族 畲族 阿米族等体内就一点都不出现 这就是说明 阿富汗 巴基斯坦独有的基因 和苗畲阿米族是分离的 但类似这样的基因 在 韩人和日本人中 并不能和汉人 苗人 畲人等几个民族分离


k6的时候 北部阿尔泰语族的Tubalar成分分离 并在 乌兹别克 吉尔吉斯 雅库特等突厥语族 以及蒙古 土族 鄂伦春 赫哲 锡伯族 楚科奇等一干民族中出现一定频率 但居然在韩人体内一丁点都不存在 这证明了 韩语并不是从泛阿尔泰语系中分离出来的一支



k12时 日韩成分出现 但和 汉 畲 苗 土家 锡伯等无法区分 在几乎所有族群中均存在 藏族 突厥系 蒙古系 澳台语系中频率较低  耶律把K值增加到了K21 仍然没有出现 能和日汉苗畲族分离的韩人成分
估计地球上任何一个地方也提炼不出一个独立的原始基因吧?讲到基因只能说相对的远或者近....大家都是智人的后代啊。
zzzz 发表于 2018-6-11 20:08
应该说的主要是突变型,某个基因突变自然是有可能只在一部分人群中扩散,比如欧美白人的浅肤色基因
山不走到我这里来,我就到它那里去。
本帖最后由 MNOPS 于 2018-6-11 23:41 编辑

614# yingchuan

两种可能性:

1. 日韩这种成分是原本的华东成分,而东南亚成分是后来从更南方来的。

2. 日韩这种成分来自于中原,华北,或东北,而华东最开始的人群是类东南亚的,只不过后来由于北方人群的大量南下才使得现代华东人变成这样。

鉴于日韩缺少华东的标志性父系O1,我个人认为第二种的可能性更大一些。

另外我记得古东北和古中原的母系D5都比较高频,这也是一条线索。
探究人类学真相,为南方民族发声
619# 红山人

南方范围太广,你说的这种相貌是中原华东相。朝鲜人这种相貌的来源除了新石器时期黄河中下游地区的古中原类型向半岛的迁徙之外我觉得也不能排除之后更晚近的迁徙。汉朝在公元前108年攻占了朝鲜半岛北部和西部的大部分地区,直到公元313年汉人在半岛的统治才被高句丽终结,这段时间应该有不少汉人移民到半岛。而根据汉俑我们可以判断这种相貌很可能是当年中原地区的主流相貌。

其实在汉朝之前就有不少中原人迁往半岛了。据后汉书记载辰韩就是秦韩,因为当中有不少秦人后裔,一些辰韩老者仍然能够说秦语。汉朝之后这种迁徙也一直都没停止过。辽东的高句丽和慕容鲜卑在名义上都奉晋朝为正统,所以西晋灭亡之后有不少中原人逃往东北。
1

评分次数

  • 强强

探究人类学真相,为南方民族发声
民以食为天,天字第一号,任何生物第一位生存发展需要就是摄取营养物质(食物)。为觅食大脑不断进化,而处理食物吸收营养物质,人和动物还独立另有一套复杂的类似大脑的神经系统——肠脑!

《科学警报》:人体肠 ...
癯鹤 发表于 2018-6-3 22:12
天人感应每如此,我不科研有人做!每当咱有啥新思,旋见他人报成果!
我在红山人帖子里有个理论新发现(虽然外国科学家的研究不断证明之,但我的思索超然于其研究之外,大家也该看的见),已经跟主题帖无关,但是很有意义的说,话说喜欢切糕的兰版猪能不能给单独弄出来做个独立帖子(起名“觅食与大脑进化的关系”),味道,舌尖上的中国,响应国策的理论新发现,喜闻乐见!


Why you never forget a great meal: Gut instinct was the 'GPS of early man' and allowed them to return to the scene of a kill

  • Researchers believe memory and our gut are more closely linked than thought
  • Could explain why people remember details of favourite meals
  • Link was critical to being able to find hunting grounds or fertile growing areas
  • Raises concerns bariatric surgery could affect memory
By Mark Prigg For Dailymail.com

Published: 19:54 BST, 13 June 2018 | Updated: 20:01 BST, 13 June 2018


22 shares

24
View
comments

While many of us struggle to remember names or addresses, remembering a great meal is far more simple.
Most people can remember an incredible amount of detail about their favourite burgers, cakes or meals.
Now, scientists believe they know why - and say food and memory is far more closely linked than thought.
Scroll down for video

+1


A new study by the University of Southern California found the body's longest nerve, the vagus nerve, is the link between 'two brains' - one in your head and the other in your gastrointestinal tract

HOW IS OUR MEMORY LINKED TO OUR GUT? Traditionally the vagus nerve is key for telling you to stop eating, transmitting biochemical signals from the stomach to the most primitive part of the brain, the brainstem.
In the new animal study, researchers found it does far more than just stopping us eating when we are full.
This 'gut-brain axis' may help you remember where you ate by directing signals to another part of the brain, the hippocampus, the memory center.


[url=][/url][url=][/url][url=][/url][url=][/url]

A new study by the University of Southern California found the body's longest nerve, the vagus nerve, is the link between what scientists have referred to as the 'two brains' - the one in your head and the other in your gastrointestinal tract.
Researchers say it helps explain why food has such a prominent place in our memory.
They say it was critical to being able to find hunting grounds or fertile growing areas.
'When animals find and eat a meal, for instance, the vagus nerve is activated and this global positioning system is engaged,' said Scott Kanoski, an assistant professor of biological sciences at USC Dornsife, who led the research.
'It would be advantageous for an animal to remember their external environment so that they could have food again.'
The scientists wrote in the June 5th study in Nature Communications that their findings may raise an important and timely medical question that merits further exploration: Could bariatric surgeries or other therapies that block gut-to-brain signaling affect memory?




Traditionally the vagus nerve is key for telling you to stop eating, transmitting biochemical signals from the stomach to the most primitive part of the brain, the brainstem.
In the new animal study, researchers found it does far more than just stopping us eating when we are full.


Researchers say the link was critical to being able to find hunting grounds or fertile growing areas again

This 'gut-brain axis' may help you remember where you ate by directing signals to another part of the brain, the hippocampus, the memory center.
To examine this gut-brain connection, the research team conducted the study on rats.
They saw that rats with their gut-brain vagus nerve pathway disconnected could not remember information about their environment.
'We saw impairments in hippocampal-dependent memory when we cut off the communication between the gut and the brain,' said lead author Andrea Suarez, a PhD candidate in biological sciences.
'These memory deficits were coupled with harmful neurobiological outcomes in the hippocampus.'
Specifically, the disconnected pathway affected markers in the brain that are key for the growth of new neural connections and new brain cells.
However, it did not appear to affect the rats' anxiety levels or their weight, the scientists noted.
WHAT ARE 'GUT FEELINGS'?Gut feelings are mysterious signals from our gastrointestinal tract that impact our emotions and decisions.
The GI tract is more than 100 times larger than the surface of the skin, and it sends more signals to the brain than any other organ system in the body.
It talks to the brain via the vagus or 'wandering' nerve, a super highway of nervous signalling that snakes up the body from organ to organ.
The nerve carries top-down messages from the brain to the body as well as bottom-up messages commonly described as 'gut feelings'.
While it's clear there's a lot of communication between the brain and gut, scientists have struggled to determine how much these feelings affect our decision making.
Recent research suggests the signals are part of an elaborate protective system that prompts us to slow down and evaluate a situation, or avoid it completely.

[url=][/url][url=][/url][url=][/url][url=][/url]
1

评分次数

http://blog.sina.com.cn/aganmu;安德(嗨,前一个无辜被封):
http://blog.sina.com.cn/kilarler
本帖最后由 癯鹤 于 2018-6-30 09:50 编辑
天人感应每如此,我不科研有人做!每当咱有啥新思,旋见他人报成果!
我在红山人帖子里有个理论新发现(虽然外国科学家的研究不断证明之,但我的思索超然于其研究之外,大家也该看的见),已经跟主题帖无关,但是 ...
癯鹤 发表于 2018-6-14 17:50
食物与大脑的关系不一般呐!难怪就是亚马孙赤身裸体的原始人,打着猎物也是优先让妇女儿童吃(对比狮子、猴子这些哺乳动物后进者,对比蚂蚁蜜蜂裸鼹鼠这些体现了自然社会和思维发展的一般规律的昆虫先进者)。我家八辈贫农,感觉我的大脑也是受限于食物,不然,咱也更有能力跟专家一较高低。

研究发现怀孕初期饮食不良可能影响胎儿脑部发育
研究发现怀孕初期饮食不良可能影响胎儿脑部发育
2018年06月29日 13:45新华网
缩小字体放大字体收藏微博微信分享
5腾讯QQQQ空间





  原标题:孕初期饮食不良可能影响胎儿脑部发育
  新华社伦敦6月28日电(记者张家伟)英国南安普敦大学发布的一项新研究说,从动物实验推断,母亲怀孕初期的饮食中如果蛋白质太少,会对胎儿的脑部发育造成持久的负面影响,可能导致成年后的短期记忆能力下降。
  英国南安普敦大学等机构研究人员在新一期美国《国家科学院学报》上发表的论文说,他们通过小鼠实验发现,小鼠在刚怀孕的数天内如果饮食中没有足够的蛋白质,会影响胎鼠的脑部早期发育,也会让神经干细胞数量减少。
  神经干细胞对形成脑部的神经细胞至关重要,神经干细胞数量减少可能导致神经细胞形成的时间点和数量出现差错,从而使成年后的短期记忆力变得较差。
  南安普敦大学研究人员桑德里娜·维莱姆-莫拉韦克说,从小鼠模型来看,怀孕初期的营养摄入对脑部发育有非常重要的影响,未来有必要深入研究。
  此前已经有研究显示,母亲在怀孕初期的饮食如果营养不足,会增加孩子未来患心血管疾病和精神分裂症等疾病风险。
责任编辑:张义凌


关键字 : 南安普敦干细胞脑部
http://blog.sina.com.cn/aganmu;安德(嗨,前一个无辜被封):
http://blog.sina.com.cn/kilarler
我对Y-DE系也是赞赏有加,他们也是伟大的塞人-岛夷,N万年前从帝之下都——昆仑揖别后,一支向东南方向迁徙,一支向西南方向迁徙,也算是东成西就。在农业和陶器的发明上这二者都有重大贡献(有敏感词儿?):


The origins of pottery revealed: Ceramic jars were popularised in Japan 10,000 years ago when fishers started to use them to store salmon

  • Find reveals how prehistoric hunter-gatherers transformed the ceramic pot
  • It transitioned from a special object to an every-day tool for preparing fish
  • Until now, almost nothing was known of how early humans used pots
  • The change in function for ceramic pots took place during a surge in popularity for fishing at the end of the last Ice Age
By Harry Pettit For Mailonline

Published: 20:00 BST, 16 July 2018 | Updated: 20:30 BST, 16 July 2018

Ceramic jars were popularised by fishers in Japan at the end of the last Ice Age, according to a new study of some of the earliest known pottery remains.
The containers were used to store salmon 10,000 years ago, but later held a wider range of food, including shellfish and marine mammals.
The find reveals how prehistoric hunter-gatherers in Japan transformed the ceramic pot from a rare and special object to an every-day item for preparing fish during a surge in the popularity of fishing at the end of the last Ice Age.
Vast forests had begun to spread across Eurasia around this time, and it was previously thought early man had moved away from fish to eat more land mammals to adjust to the change.
Scroll down for video






Ceramic jars were popularised by fishers in Japan at the end of the last Ice Age, according to a new study of some of the earliest known pottery remains (pictured). The containers were used initially to store salmon 10,000 years ago, scientists found

Study co-author Professor Oliver Craig, an archaeologist at the University of York, said: 'Our results demonstrate that pottery had a strong association with the processing of fish, irrespective of the ecological setting.
'Contrary to expectations, this association remained stable even after the onset of warming, including in more southerly areas, where expanding forests provided new opportunities for hunting and gathering.'
The international team, which included scientists in Britain, Sweden and the Netherlands, examined 800 ancient pottery vessels, mostly from Japan - a country long-recognised as an early innovator of ceramics usage.




The study's ceramics date from the end of the Late Pleistocene - a time when our ancestors were living in glacial conditions - to the post-glacial period when the climate warmed close to its current temperature and when man began to produce pottery in much greater quantity.
They include jars excavated at the Hanamiyama Site in Yokohama and used by the ancient Jomon people - among the earliest known humans in Japanese history.
To pick out the food processed in the pots, researchers compared fats found in the pots with compounds derived from the processing of waterborne animals.
The jars were used to store and process fish, initially salmon, but then a wider range including shellfish, freshwater and marine fish and mammals.






Scientists said their find reveals how prehistoric hunter-gatherers in Japan transformed the ceramic pot from a rare and special object to an every-day tool for preparing fish at the end of the last Ice Age (stock image)

The charred remains suggested the rise of ceramic production was closely linked with a surge in fishing at the end of the last Ice Age.
Professor Craig said: 'The results indicate that a broad array of fish was processed in the pottery after the end of the last Ice Age, corresponding to a period when hunter-gatherers began to settle in one place for longer periods and develop more intensive fishing strategies.
'We suggest this marks a significant change in the role of pottery of hunter-gatherers, corresponding massively increased volume of production, greater variation in forms and sizes and the onset of shellfish exploitation.'






The ceramics include jars excavated at the Hanamiyama Site in Yokohama, Japan, and used by the ancient Jomon people - among the earliest known humans in Japanese history

[url=][/url][url=][/url][url=][/url][url=][/url]

The study sheds new light on how ancient hunter-gatherers in Japan processed and consumed foods following the last Ice Age.
Until now, virtually nothing was known of how early pots were used.
Study lead author Dr Alex Lucquin said: 'Thanks to the exceptional preservation of traces of animal fat, we now know that pottery changed from a rare and special object to an every-day tool for preparing fish.
'I think that our study not only reveals the subsistence of the ancient Jomon people of Japan but also its resilience to a dramatic change in climate.'

Humans made bread BEFORE they learnt how to grow wheat: 14,400 year-old charred flatbread is the oldest example of bread ever discovered

  • Experts excavated a site called Shubayqa 1, northeast of Amman in Jordan
  • It was home to the Natufian Culture of hunter-gatherers who settled the region
  • The Natufians were some of the first people to build homes and tend to crops
  • Dating suggests the culture flourished between 14,500 and 11,500 years ago
  • Experts gathered 24 charred food remains from fire pits found at the location
  • The flatbreads were made using barley, einkorn and oat that was ground, sieved and kneaded before baking
ByTim Collins For Mailonline
Published: 20:00 BST, 16 July 2018 | Updated: 20:27 BST, 16 July 2018

Archaeologists have unearthed evidence of the earliest evidence of bread-making, taking place 14,400 years ago in Jordan.
The loaves of bread were made some 4,000 years before early humans started to grow and farm wheat, experts claim.
Scientific analysis revealed microscopic charred remains discovered in a firepit were made using a blend of cereals that had been harvested, processed and cooked in the same fashion as modern baking.
Researchers believe the Natufian Culture may have literally sowed the seeds for the neolithic farming revolution almost 5,000 years before it began in the Near East.
The time-consuming production of these first loaves may have been one of the key driving forces behind the later agricultural revolution, researchers now believe.
Scroll down for video


Archaeologists have uncovered evidence suggesting the Natufian Culture, which flourished in modern-day Israel, Jordan, Lebanon and Syria between 14,500 and 11,500 years ago, may have been the first to bake loaves of bread



Tantalising clues of the charred remains of a flatbread like loaf were discovered at the site. This image shows a scanning electron microscope (SEM) image of a bread-like product found in the firepits uncovered in the area

The findings were made at Shubayqa 1, which is located roughly 90 miles (150 km) northeast of Amman, in Jordan.
The archaeological site has seen excavations and analysis by a University of Copenhagen-led team from 2012 to the present day.
Along with colleagues from University College London (UCL) and University of Cambridge, the team gathered 24 charred food remains from fire pits found at the location.
The remains were analysed with electronic microscopy at UCL, which revealed the early loaf – a kind of flatbread – was made with barley, einkorn and oat that was ground, sieved and kneaded before baking.












Researchers gathered 24 charred food remains from fire pits found at the location. One of the fireplaces (circular hole, centre of the image) where the bread-like products were discovered at Shubayqa 1 is pictured





This image shows Amaia Arranz-Otaegui and Ali Shokaiteer Sampling wheat and barley in the Shubayqa area. Analysis showed the early bread was made with barley, einkorn and oat that was ground, sieved and kneaded before baking









Here a researcher grinds processed plants for experimental production of flour in an attempt to recreate the process using techniques available at the time

Professor Dorian Fuller from the UCL Institute of Archaeology said: 'Bread involves labour intensive processing which includes dehusking, grinding of cereals and kneading and baking.
'That it was produced before farming methods suggests it was seen as special, and the desire to make more of this special food probably contributed to the decision to begin to cultivate cereals.'
Lead author Amaia Arranz Otaegui from the University of Copenhagen added: 'The presence of hundreds of charred food remains in the fireplaces from Shubayqa 1 is an exceptional find, and it has given us the chance to characterise 14,000-year-old food practices
'The remains are very similar to unleavened flatbreads identified at several Neolithic and Roman sites in Europe and Turkey. So we now know that bread-like products were produced long before the development of farming.'




Researchers believe the Natufian Culture may have literally sowed the seeds for the neolithic farming revolution almost 5,000 years before it began in the Near East. This image shows a researcher excavating at Shubayqa 1





They say the early and extremely time-consuming production of bread may have been one of the key driving forces behind the later agricultural revolution. A closeup of one of the fireplaces where the bread-like products were discovered at Shubayqa 1

Around 14,500 years ago, hunter-gatherers from the Natufian Culture began putting down roots en masse in the ancient Near East.
In December, archaeologists announced they had uncovered evidence indicating farming and house building among the group was more widespread than previously believed.
The society had been thought to be centred in modern Israel in its early years, but new findings suggest groups sprang up almost simultaneously across the region.
The mass domestication of neolithic founder crops, like wheat and barley, is believed to have begun almost 5,000 thousand years later, and the Natufian Culture may have literally sown the seeds for this revolution to take place.
Archaeologist Tobias Richter, who led the excavations added: 'Natufian hunter-gatherers are of particular interest to us because they lived through a transitional period when people became more sedentary and their diet began to change.






The hunter-gatherers of the Natufian Culture were some of the first people to build permanent houses, like this structure, and tend to edible plants





These innovations were probably crucial for the subsequent emergence of agriculture during the Neolithic era. This image shows University of Copenhagen archaeologists carefully excavating a human burial at Shubayqa 1

'Flint sickle blades as well as ground stone tools found at Natufian sites in the Levant have long led archaeologists to suspect that people had begun to exploit plants in a different and perhaps more effective way.
'But the flat bread found at Shubayqa 1 is the earliest evidence of bread making recovered so far, and it shows that baking was invented before we had plant cultivation.
'Indeed, it may be that the early and extremely time-consuming production of bread based on wild cereals may have been one of the key driving forces behind the later agricultural revolution where wild cereals were cultivated to provide more convenient sources of food.'




The society had been thought to be centred in modern Israel in its early years, but new findings suggest groups sprang up almost simultaneously across the region. This image shows an incised stone pebble that was found during the excavations at Shubayqa 1

The hunter-gatherers of the Natufian Culture, which flourished in modern-day Israel, Jordan, Lebanon and Syria between 14,500 and 11,500 years ago, were some of the first people to build permanent homes and tend to crops.
These innovations were crucial for the subsequent emergence of agriculture during the Neolithic era.
Previous research had suggested the centre of this culture was the Mount Carmel and Galilee region, and that it spread from here to other parts of the region.
However, more recent research has challenged this 'core region' theory, with excavations uncovering a well-preserved Natufian site, where they uncovered a large collection of charred plant remains.
Dating of the finds suggests the culture was more widespread much earlier than previously thought.
Dr Tobias Richter, who led the dig, said: 'We dated more than twenty samples from different layers of the site, making it one of the best and most accurately dated Natufian sites anywhere.
'The dates show, among other things, that the site was first settled not long after the earliest dates obtained for northern Israel, around 14,600 years ago.
'This suggests that the Natufian either expanded very rapidly, which we think is unlikely, or that it emerged more or less simultaneously in different parts of the region.
'The early date of Shubayqa 1 also shows that Natufian hunter-gatherers were more versatile than previously thought.'


Previous research had suggested that the centre of this culture was the Mount Carmel and Galilee region, and that it spread from here to other parts of the region. But the new study challenges this 'core region' theory. This image shows excavations in progress at Shubayqa 1





Experts believe the culture emerged more or less simultaneously in different parts of the region. They believe the emergence of the 'Neolithic way of life' was a complex process that cannot be explained on the basis of a single cause

Dating was carried out by Professor Elisabetta Boaretto at the Weizmann Institute of Science using Accelerator Mass Spectrometry, or AMS.
Using a specially designed mass spectrometer, the team was able to reveal the amount of carbon-14 in a sample down to the single atom.
Based on the half-life of the radioactive atoms, the dating is accurate to around 50 years.
For the analysis of the specimen from Shubayqa, the team was able to select only short-lived plant species or short-lived plant parts, such as seeds or twigs, to obtain the dates, ensuring the highest possible accuracy.
Professor Boaretto says that the 'core area' theory may have come about, in part, because the Mt Carmel sites have been the best preserved and studied, until now.
In addition to calling into question the idea of the Natufian beginning in one settlement and spreading outwards, the study suggests that the hunter-gatherers who lived 12,000 to 15,000 years ago were ingenious and resourceful.
They learned to make use of numerous plants and animals wherever they were, and to tend them in a way that led to early settlement.
The authors say that this supports a view in which there were many pathways to agriculture and 'the Neolithic way of life' was a highly variable and complex process that cannot be explained on the basis of single-cause models.
Dr Richter added: 'Past research had linked the emergence of the Natufian to the rich habitat of the Mediterranean woodland zone.
'But the early dates from Shubayqa show that these late Pleistocene hunter-gatherers were also able to live quite comfortably in more open parkland steppe zones further east.
'Some of their subsistence appears to have relied heavily on the exploitation of club rush tubers, as well as other wild plants.
'They also hunted birds, gazelle and other animals.'
The full findings of the study were published in the journal Proceedings of the National Academy of Science.




The site, called Shubayqa 1 and located in modern day Jordan, was excavated by a University of Copenhagen team from 2012 to 2015





The Natufian people learned to make use of numerous plants and animals where ever they were, and to tend them in a way that led to early settlement. This image shows an aerial view of the settlement site
http://blog.sina.com.cn/aganmu;安德(嗨,前一个无辜被封):
http://blog.sina.com.cn/kilarler
12# 无关时光的守留 这种长相印尼和缅甸有
返回列表
baidu
互联网 www.ranhaer.org