where did the first americans migrate
Answer:
The ancestors of Native American populations from the tip of Chile in the south to Canada in the north, migrated from Asia in at least three waves, according to a new international study published online in Nature this week that involved over 60 investigators in 11 countries in the Americas, plus four in Europe, and Russia.
In what they describe as the most comprehensive survey of genetic diversity in Native Americans so far, the researchers studied variation in Native American DNA sequences. They found that while most Native American populations descend primarily from one migration, there were two later ones that also made a significant genetic contribution.
The first migration, that led to the majority of Native American populations, was of a single group called the “First Americans” that crossed from Asia to America in a land bridge called Beringia, that existed during the ice ages more than 15,000 years ago, say the researchers, whose efforts were co-ordinated by Professor Andres Ruiz-Linares of the department of Genetics, Evolution and Environment at University College London (UCL) in the UK.
The later migrants probably arrived in boats, after the land-bridge disappeared at the end of the ice ages.
In a press statement, Ruiz-Linares explains that for years there has been a debate about whether the settlement of the Americas came from one or several migrations out of Siberia.
“But our research settles this debate: Native Americans do not stem from a single migration. Our study also begins to cast light on patterns of human dispersal within the Americas,” he adds.
The findings confirm what linguist Joseph Greenberg proposed in 1986. From studying language differences among Native Americans, he said the Americas must have been populated in three waves of migration.
For the study, the researchers searched more than 300,000 specific DNA markers or “snips” (SNPs, Single Nucleotide Polymorphisms) from 52 Native American and 17 Siberian groups, looking for similar and different patterns of genes.
Co-author David Reich, Professor of genetics at Harvard Medical School in the US, says they found evidence of at least three “deep lineages”:
“The Asian lineage leading to First Americans is the most anciently diverged, whereas the Asian lineages that contributed some of the DNA to Eskimo-Aleut speakers and the Na-Dene-speaking Chipewyan from Canada are more closely related to present-day East Asian populations,” says Reich.
It appears that 50% of the DNA of Eskimo-Aleut speakers comes from the First Americans, while in the Na-Dene-speaking Chipewyans, 90% of their DNA descends from the First Americans.
The analysis also showed that once these waves of migrations arrived in the Americas, the groups expanded southwards, hugging the coastline, splitting off along the way. After they split off, the groups mixed very little with each other, especially the ones that ended up in South America.
But while non-mixing appeared to be the general pattern after dispersal, the researchers found two striking exceptions. One shows a North-South re-mix, and the other a West-East re-mix.
In the North-South re-mix, it looks like there was some back-migration from South America northwards, and this is reflected in the genomes of Central American Chibchan-speakers, which contains DNA from two widely separated strands of Native ancestry.
In the West-East re-mix, it seems some Eskimo-Aleut speakers migrated back to Asia, as the genomes of Naukan and coastal Chukchi populations of north-eastern Siberia carry some “First American” DNA.
The analysis was not straightforward, because the researchers had to find a way to rule out genes from the European and African populations that arrived in the Americas from the late 15th century onwards.
Ruiz-Linares says they managed to develop a method to “peel back” the addition of those genes to the mix, which he says “allowed us to study the history of many more Native American populations than we could have done otherwise”.
The team included researchers from: Argentina, Bolivia, Brazil, Canada, Chile, Colombia, Costa Rica, France, Guatemala, Mexico, Peru, Russia, Spain, Switzerland, the UK, and the US.
Written by Catharine Paddock PhD
What was the most effective opposition to the English laws on trade and taxes?
(A) a boycott of British goods
(B) passing laws of resistance in colonial assemblies
(C) refusal to talk with the prime minister
Answer:
(A) a boycott of British goods
Explanation:
I am one of the regions of Texas. I have several natural features that are not in any other region. My region receives the least amount of precipitation
(rainfall). I am also the smallest region in Texas. What region am 1?
Answer:
Big Bend
Explanation:
big bend is the smallest region and it also doesn't get much rainfall
Answer:
big ben
Explanation:
Big Ben is the sammlest region in texas and it also doesn't get much rainfall.
Cuba was under the control of what country
what are tiny structures that all living things are made of, and are the smallest units able to perform like functions
In Japan, What was the relationship between samurai and daimyos?
Answer:
What was the relationship between the samurai and the daimyo? the relationship between the samurai and the daimyo was loyalty. The Daimyo were lords to the samurai. The samurai swore to server and protect their lords with loyalty and service not to the central government.
Explanation:
eep, if ya need anymore help on Japanese tingz im most likley always online<3. hope this helped sir/ ma'am/ human.
Which of the following groups would create the largest empire in the
Middle East prior to Alexander the Great?
Persians
Israelites
Chaldeans
Assyrians
Answer:
l think Persians is an answer
Answer:
I think
your answer is
persians
A Prophetis an example of a?
Give a detailed example of a community ?
Answer:
A Community is a group of people who can share the same beliefs, do a similar act, and/or just come together in an alliance as a group.
Explanation:
Which statement best explains why this source is credible or not? This is a credible source because it presents facts and evidence about the discovery of Ötzi. This is a credible source because it contains an interview with Ötzi that tells about his life. This is not a credible source because it contains information that is not relevant to Ötzi. This is not a credible source because it is biased because it contains sarcasm about Ötzi.
Answer:
A
Explanation:
Because I got it right.
15. What is Rousseau's point of view? What would Rosseau recommend for your deserted island
government?
I
Answer:
Rousseau argued that the general will of the people could not be decided by elected representatives. He believed in a direct democracy in which everyone voted to express the general will and to make the laws of the land. Rousseau had in mind a democracy on a small scale, a city-state like his native Geneva.
Explanation:
30 brainly points!!!!!!! Compare and contrast your city of Woodstock with the map of Savannah. What do you notice? What are the pros and cons of each? Be sure to cite evidence from both to support your response.
Answer:
Explanation:New England colonies were founded to be new communities for religious separatists whereas the Southern colonies were created as business colonies to make money for Great Britain.
The Southern Colonies included Virginia, the Carolinas, and Maryland. Once it is discovered the ground was fertile for tobacco growth, the colonies were used to expanded tobacco plantations. Other cash crops were added to the Southern Colonies as more land was acquired. Religion was not a big priority in the colonies compared to New England colonies where religion was the focus of the whole society. The government was run by religious elders and rules of the community were dictated by the church.
C
Which best describes the food sources of American Indians in the Northeast and Southeast in the 1500s?
Both groups relied on hunting, fishing, and agriculture.
Both groups relied on hunting, gathering, and fishing.
Tribes in the Northeast relied on hunting, while tribes in the Southeast relied on fishing.
Tribes in the Southeast relied on agriculture, while tribes in the Northeast relied on hunting,
Answer:
#1, Both groups relied on hunting, fishing, and agriculture. :)Explanation:
Answer:
AExplanation:
took the quiz and got it right :)John Smith saved the Jamestown colony from destruction. True False
Answer: false
Explanation:
he saved the Indians
What was the commerce and slave trade compromise?
Answer:
Under the Commerce and Slave Trade Compromise, Congress could not tax state exports or interfere with the slave trade until 1808.
Explanation:
What new political entity did Ferenc Deák help create?
Answer:
"A moderate Hungarian leader that helped workout a compromise that created a new political power known as the Dual Monarchy of Austria-Hungary."
According to Quizlet
The Wichita Native Americans came to Texas from Kansas.
Please select the best answer from the choices provided
T
F
Answer:
True
Explanation:
hey its Pink hair guy some of you might know me plz respond if you know me
Answer:
i might from my other account
Explanation:
Write a five-minute play based on the Sadler report
First you will read the excerpt from the Sadler report. report contains testimonies from factory workers describing the work conditions in factories after reading the document you write a short play based on the testimonies in the report the dialogue in your play should not match that with the seller report exactly but the play should discuss the same topics including the experience of the child workers including conditions within factories the abuse of employees working long hours and other legal issues of concern for referrals during the era.
Answer:
i know im late but heres what i put when i did the assignment
Hi. my name is sammy. I am 9 years old, and i work in a factory to help my family get money. We begin at five in the morning and stopped at nine in the night. It is really hard work and the bosses are really mean to us. But most of us have found ways to make it fun. Everyone always seems to be always cheerful and alert, taking pleasure in the light play, but i don’t really understand how they could ever like this. And i barely even make any money! And im always soo hungry while im working because we cant stop to eat or stop for anything. From 5 in the morning to 9 in the evening, i do nothing but work.
Explanation:
Sadler's investigation disposed of the poor working conditions and sparked widespread public outrage. The report served as proof of unsound law and was cited as an example of how greedy factory owners exploited children.
What did the Sadler Report accomplish?It concluded, however, that children were working excessively long hours, and that government intervention to regulate child labor in textile trades was therefore required - this required both new restrictions on working hours and a new and effective organization to enforce them.
Among the commission's accomplishments are female education, secondary education, and so on. The commission's shortcomings can be seen in the fact that the majority of the teachers were untrained, and the medium of instruction was in English.
Learn more about the Sadler Report here:
https://brainly.com/question/9740121
#SPJ2
What is the name of the church created by King Henry the 8th?
Glided age immigration
What two groups most helped the freedmen during the Reconstruction Era? A.) Radical Republicans and carpetbaggers
B.) Northern democrats and Ku Klux Klan members
C.) Southern Democrats and supporters of the Black Codes
D.) Confederate veterans and supporters of President Andrew Johnson
Which is not required for the development of civilization?
A more food than is needed for survival
B various kinds of work
C cities
D wheeled transportation
Answer:
its C. cities
Explanation:
its C.cities
Describe Massasoit's ideas of leadership and Metacom's ideas
Answer:
Explanation:
Massasoit was the leader of the Wampanoag when the Pilgrims arrived at Plymouth in 1620. Although he is not mentioned by name in any English accounts prior to 1621, he and his brother Quadequina are undoubtedly the "two Kings, attended with a guard of fiftie armed men" that met Captain Thomas Dermer at Pokanoket in May 1619, when he was returning Tisquantum ("Squanto") to his homeland.
On 22 March 1620/1, Massasoit decided to pay his first visit to the Plymouth Plantation at the invitation of Tisquantum, who had first visited with the Pilgrims shortly before. In an almost identical scenario as that of Thomas Dermer a year earlier, he and his brother along with 60 armed men came and stood at the top of the hill overlooking the Colony. Edward Winslow was sent to him with some knives and a copper jewel chain as gifts--and Massasoit was told that the Pilgrims only desired peace and trading. Massasoit was told that King James of England saluted him with love and peace, and accepted him as a friend and ally. Massasoit liked what he heard; the English would make powerful allies against his enemies in the region. The Pilgrims wanted a peace treaty, and so he willingly undertook the negotiations.
At the peace negotiation, he was met at the river by Captain Myles Standish and Elder William Brewster. They saluted one another and he was taken to William Bradford's house for the negotiations with Governor John Carver. Massasoit was given some liquor, fresh meat, and some biscuits. Massasoit and the Pilgrims agreed to a treaty which said that none of Massasoit's men would harm the Pilgrims--and if they did, he would send them to the Pilgrims for punishment. And if anyone did unjust war against Massasoit, the Pilgrims would come to his aid. They also agreed that when trading, the Indians would not bring their bows and arrows, and the Pilgrims would not bring their guns.
Mayflower passenger Edward Winslow described Massasoit as follows:
In his person he is a very lusty man, in his best years, an able body, grave of countenance, and spare of speech. In his attire little or nothing differing from the rest of his followers, only in a great chain of white bone beads about his neck, and at it behind his neck hangs a little bag of tobacco, which he drank and gave us to drink; his face was painted with a sad red like murry, and oiled both head and face, that he looked greasily. All his followers likewise, were in their faces, in part or in whole painted, some black, some red, some yellow, and some white, some with crosses, and other antic works; some had skins on them, and some naked, all strong, tall, all men of appearance . . . [he] had in his bosom hanging in a string, a great long knife; he marveled much at our trumpet, and some of his men would sound it as well as they could.
In September 1623, Emmanuel Altham described Massasoit in a letter:
And now to speak somewhat of Massasoit's stature. He is as proper a man as ever was seen in this country, and very courageous. He is very subtle for a savage, and he goes like the rest of his men, all naked but only a black wolf skin he wears upon his shoulder. And about the breadth of a span he wears beads about his middle.
After meeting in the Pilgrim village, Massasoit then invited a Pilgrim delegation to meet him at their place. Myles Standish and Isaac Allerton volunteered for the adventure. Massasoit gave to them ground nuts and tobacco as gifts when they arrived, and Standish and Allerton presented him with a kettle of peas.
A second trip to Pokanoket, where Massasoit lived, was made by the Pilgrims, so that they could learn more about their neighbors and to make some additions to their treaty. This time, Edward Winslow and Stephen Hopkins were chosen to make the trip. Massasoit came out to see them when they arrived at the end of their several-days journey. They reaffirmed their peace with one another, and Massasoit agreed to tell his Indians to stop making random visits to Plymouth looking for food and entertainment; and he also agreed to send a messenger to contact the Indians of which the Pilgrims took corn from upon their first arrival--since they had thus far not been able to repay them.
I do hope I helped you! :)
how gandhi made uss free
Explanation:
While leading nationwide campaigns to ease poverty, expand women's rights, build religious and ethnic harmony and eliminate the injustices of the caste system, Gandhi supremely applied the principles of nonviolent civil disobedience, playing a key role in freeing India from foreign domination.
when was the first civil WAR?
Answer:
the first civil war was in 1642 and it ended in 1646
Explanation:
Answer:
For the United Kingdom, there has been a Civil War, from 1642-1646.
Here's a mnemonic:
In 1642, the UK Civil War had just begun.
Hope it helps!
ESSENTIAL QUESTION How does geography influence the way people live? this question is from the The Kidnapped Prince if you read the book for social studies
Answer:
Where they live depends on how they live basically
Explanation:
Why would the separation of powers protect the rights of the people ?
Answer:
Checks and Balances
Explanation:
The main reason for the implementation of the separation of powers is so that each individual grouping of government is able to keep on another in check. For example in the US we have the Legislative branch, the Executive branch, and the Judicial branch. Having separate branches prevents the government from becoming too powerful and making executive decisions without overlook.
in response to the tea act of 1773, many colonist joined
Answer:
They joined the Sons of Liberty.
Answer:
b. the sons of liberty
Explanation:
just took the test on edge 2020
what happened in 911?
explain in details please ..
Answer:
On september 11, 2001 a terrorist group named Al Queda based in afgahnistan hijacked 3 sets of commercial planes, one directed at the twin towers, one at the pentagon, and one at the white House. So when the first plane hit, in the twin towers everyone was shocked and didnt know how to react then people realized that this was a terroist attack and many died. Once news broke out, the passangers on the other planes fought the terrorists in an attempt to steer the plane away from hitting the pentagon. Once these events were over, the Us lead a search party for the group responsibles leader Osama Bin Laden and executed him. They also enforced strong airline laws and the war on terrorism also occured.