Question 1

What happened to a large proportion of the large game animals in North America at the end of the Pleistocene?

Accepted Answer

A large proportion of large game animals in North America, such as mammoths, mastodons, and sabre-toothed cats, became extinct at the end of the Pleistocene. This event is known as the Pleistocene Overkill Hypothesis, where humans are believed to have played a significant role in the extinction of these animals through overhunting and habitat destruction.

Question 2

Researcher Paul Martin believes that the massive extinction of large mammals at the end of the Pleistocene in North America was the result of:

Accepted Answer

Paul Martin's theory, known as the "overkill" hypothesis, suggests that the extinctions were caused by overhunting by the first human migrants to North America. There is evidence of a correlation between the arrival of humans and the sudden disappearance of large mammal species. Climate change and evolution may have played a role, but the evidence suggests that overhunting was the primary factor. Diseases brought in by humans are also a possibility, but there is not enough evidence to support it as a primary cause.

Question 3

The sharp drop seen in the presence of the Sporomiella fungus in North America about 14,800 years ago is interpreted as meaning this is when:

Accepted Answer

The sharp drop in the presence of Sporomiella fungus is believed to be a result of the extinction of the late Pleistocene megafauna of North America, which occurred around 14,800 years ago. This extinction event likely had a significant impact on the ecosystem and landscape of North America, and has been linked to a number of factors including overhunting by humans and rapid climate change.

Question 4

Of the five mitochondrial haplogroups seen among modern Native Americans-A, B, C, D, and X-which one has not been found among modern Asians:

Accepted Answer

The answer of Of the five mitochondrial haplogroups seen among...

Question 5

What was the mitochondrial DNA haplogroup of the 12,500-year-old Anzick boy:

Accepted Answer

The mitochondrial DNA haplogroup of the 12,500-year-old Anzick boy, associated with the Clovis culture, is D. This haplogroup is one of the five main haplogroups found among the indigenous peoples of the Americas.

Question 6

How old is the Mal'ta skeleton:

Accepted Answer

The Mal'ta skeleton is estimated to be around 24,000 years old based on radiocarbon dating and analysis of the DNA extracted from the bones.

Question 7

The site of Mal'ta is located where:

Accepted Answer

The site of Mal'ta is located in Siberia, Russia.

Question 8

Overall, the genome of the 12,500-year-old Anzick skeleton is most similar to which modern human group:

Accepted Answer

The genome of the 12,500-year-old Anzick skeleton is most similar to modern Native Americans, suggesting that this individual is ancestrally related to contemporary indigenous populations of the Americas.

Question 9

Based on the DNA recovered from the 11,500-year-old skeleton called Xach'itee'aaneh t'eede gaay (Sunrise girl-child), this early American became genetically isolated from her Asian ancestors about how long ago:

Accepted Answer

The DNA from the 11,500-year-old skeleton known as Xach'itee'aaneh t'eede gaay (Sunrise girl-child) indicates that this early American and her ancestors became genetically isolated from their Asian ancestors approximately 22,000 years ago. This isolation marks a significant point in the understanding of human migration and population genetics in the Americas.

Question 10

The ancient people who settled the Gault site likely did so because of the availability of what kind of resource:

Accepted Answer

The Gault site is known for its abundance of high-quality chert, a type of stone that was highly valued by indigenous peoples for making tools and weapons. This would have been a valuable resource for the ancient people who settled there.

Question 11

Genetic analysis of modern Native Americans indicates that the source of their population is:

Accepted Answer

Genetic analysis confirm that the source of Native American population is Asia, specifically the region of Siberia. The ancestors of Native Americans migrated from Asia to the Americas via the Bering Land Bridge around 15,000-20,000 years ago.

Question 12

Geneticists have concluded that there were how many distinct migrations of groups to the New World from northeast Asia in antiquity:

Accepted Answer

Geneticists have concluded that there were three distinct migrations of groups to the New World from northeast Asia in antiquity. This is based on genetic evidence showing variations among the indigenous populations of the Americas, which can be traced back to at least three different waves of migration across the Bering land bridge.

Question 13

Based on rates of change in mtDNA, northeast Asian and Native American populations separated about how long ago:

Accepted Answer

According to rates of change in mtDNA, northeast Asian and Native American populations separated around 23,000-20,000 years ago.

Question 14

Variability within Native American mtDNA lineages suggests a dispersal through the Americas about how long ago:

Accepted Answer

The answer of Variability within Native American mtDNA lineages suggests...

Question 15

Discuss the paleogeography of the western Pacific. How is this relevant to our understanding of the earliest settlement of "Greater Australia?"

Accepted Answer

The answer of Discuss the paleogeography of the western Pacific....

Question 16

What is the oldest evidence for the occupation of Sunda?

Accepted Answer

The answer of What is the oldest evidence for the...

Question 17

What is the oldest evidence for the occupation of Sahul?

Accepted Answer

The answer of What is the oldest evidence for the...

Question 18

What evidence is there that Australia was occupied by human beings 60,000 years ago? What evidence suggests a more recent date (40,000 years) for this first migration?

Accepted Answer

The answer of What evidence is there that Australia was...

Question 19

Discuss the controversy over the dating of the Lake Mungo III skeleton. What does the preponderance of evidence indicate about its age?

Accepted Answer

The answer of Discuss the controversy over the dating of...

Question 20

Compare the morphology of the Mungo I skeleton with the Willandra Lakes 50 cranium. How might the similarities or differences be explained?

Accepted Answer

The answer of Compare the morphology of the Mungo I...

Quiz 7: Expanding Geographical Horizons: New Worlds

What happened to a large proportion of the large game animals in North America at the end of the Pleistocene?

Researcher Paul Martin believes that the massive extinction of large mammals at the end of the Pleistocene in North America was the result of:

The sharp drop seen in the presence of the Sporomiella fungus in North America about 14,800 years ago is interpreted as meaning this is when:

Of the five mitochondrial haplogroups seen among modern Native Americans-A, B, C, D, and X-which one has not been found among modern Asians:

What was the mitochondrial DNA haplogroup of the 12,500-year-old Anzick boy:

How old is the Mal'ta skeleton:

The site of Mal'ta is located where:

Overall, the genome of the 12,500-year-old Anzick skeleton is most similar to which modern human group:

Based on the DNA recovered from the 11,500-year-old skeleton called Xach'itee'aaneh t'eede gaay (Sunrise girl-child) , this early American became genetically isolated from her Asian ancestors about how long ago:

The ancient people who settled the Gault site likely did so because of the availability of what kind of resource:

Genetic analysis of modern Native Americans indicates that the source of their population is:

Geneticists have concluded that there were how many distinct migrations of groups to the New World from northeast Asia in antiquity:

Based on rates of change in mtDNA, northeast Asian and Native American populations separated about how long ago:

Variability within Native American mtDNA lineages suggests a dispersal through the Americas about how long ago:

Discuss the paleogeography of the western Pacific. How is this relevant to our understanding of the earliest settlement of "Greater Australia?"

What is the oldest evidence for the occupation of Sunda?

What is the oldest evidence for the occupation of Sahul?

What evidence is there that Australia was occupied by human beings 60,000 years ago? What evidence suggests a more recent date (40,000 years) for this first migration?

Discuss the controversy over the dating of the Lake Mungo III skeleton. What does the preponderance of evidence indicate about its age?

Compare the morphology of the Mungo I skeleton with the Willandra Lakes 50 cranium. How might the similarities or differences be explained?