How did modern humans likely migrate to the Americas? … What does the cranial morphology of Kennewick Man, however, show?
a robust face and jaws that are not found in modern
European men. Which of these tools indicates that H.
What does the morphology of the Paleo Indian skull from Kennewick indicate?
The morphology of the Paleoindian skull from Kennewick indicates that it:
looks quite different from modern Native Americans’ skulls.
What bone was DNA extracted from on Denisova?
The discovery of the Denisovans, announced in 2010, relied on DNA extracted from
a pinky bone
and a hefty tooth unearthed in Denisova cave in Siberia’s Altai Mountains. “It was the first time in the history of science that a new group of humans was discovered based on only DNA,” Carmel says.
What was the observation regarding the Denisova tooth?
A tooth found in Denisova Cave
carries a mitochondrial genome highly similar to that of the finger bone
. This tooth shares no derived morphological features with Neanderthals or modern humans, further indicating that Denisovans have an evolutionary history distinct from Neanderthals and modern humans.
Where was evidence found that Neandertals practiced cannibalism?
A team of French and American archaeologists has found clear evidence of cannibalism at
a 100,000-year-old Neanderthal cave site in southern France
. “This is conclusive evidence that at least some Neanderthals practiced cannibalism,” said paleontologist Tim White, professor of integrative biology.
What does the Out of Africa model assert?
– Out of Africa model: asserts
that modern humans evolved relatively recently in Africa, migrated into Eurasia and replaced all populations
which had descended from Homo erectus. … Homo sapiens arose in one place, probably Africa (geographically this includes the Middle East).
What does the Out of Africa model assert group of answer choices?
The out-of-Africa model asserts: …
migrations of Homo habilis out of Africa
. a single origin of modern people and eventual replacement of archaic Homo sapiens throughout Africa, Asia, and Europe.
What blood type were Neanderthals?
Only one Neanderthal’s blood had been typed in the past, and was found to be
type O
under the ABO system used to classify the blood of modern humans. Since all chimpanzees are type A, and all gorillas are type B, it was assumed that all Neanderthals were type O.
Are Neanderthals smarter?
Neanderthals had
larger brains than modern humans do
, and a new study of a Neanderthal child’s skeleton now suggests this is because their brains spent more time growing.
Why were Neanderthals short and stocky?
Their short, stocky physiques
were suited to cold environments
. The bulky trunk, in addition to their short lower leg and lower arm bones, gave Neanderthals proportions that would have minimised the skin’s surface area, presumably to conserve heat under the predominantly colder conditions of the last 200,000 years.
What has the hobbit skeleton found on the Indonesian island of Flores been interpreted to be?
The “Hobbit” skeleton found on the Indonesian island of Flores has been interpreted as:
a new species based on the morphology of the wrist bones
.
Why do sub Saharan Africans show the largest genetic diversity of any human population?
Sub-Saharan Africans show the largest genetic diversity of any human population. This is likely to have resulted from:
the accumulations of genetic mutations over time
.
What are the most distinctive features of cold adaptation in Neanderthals?
12.16 Most distinctive traits about the cold adaptation complex of Neandertals are:
the body and length of the arms and legs
.
Which of the following has been used as evidence to support that Neanderthals were cannibals?
The cave site of Moula-Geurcy (Europe)
indicates Neanderthal cannibalism based on comparative analysis of hominid and animal bone spatial distributions, modifications by stone tools, and skeletal part representations.
Why do modern humans have misaligned teeth?
A key precipitating factor for malocclusion relates to the size of our jaws. For healthy development, jaws must be able to provide sufficient room for all of the thirty-two teeth that grow in the mouth. Over time, our teeth have grown
crooked because our jaws have grown smaller
.
What major climate event nearly wiped out Neanderthals?
What major climate event nearly wiped out Neanderthals?
There were substantially colder temperatures
. What are cavities in the teeth also called?
What is Out of Africa theory write briefly about human migration?
The “Out of Africa” theory (hypothesis)
states that all modern humans stem from a single group of Homo sapiens who came from Africa
. … These waves of migration steadily occurred over the world for tens of thousands of years, and eventually became the human civilization.
What does the Out of Africa model of modern human origins state about modern humans Group of answer choices?
What does the Out-of-Africa model of modern human origins state about modern humans?
They spread from Africa and replaced all other populations with no gene flow.
What is the basis for the Out of Africa theory?
New research confirms the “Out Of Africa” hypothesis that
all modern humans stem from a single group of Homo sapiens who emigrated from Africa 2,000 generations ago and spread throughout Eurasia over thousands of years.
What is Out of Africa theory describe?
The first theory, known as the ‘Out of Africa’ model, is
that Homo sapiens developed first in Africa and then spread around the world between 100 and 200,000 years ago, superseding all other hominid species
. The implication of this argument is that all modern people are ultimately of African descent.
What do traits of anatomically modern humans include Group of answer choices?
Scientists define modern in terms of: a series of distinctive anatomical traits that contrast with archaic traits from earlier hominins. Modern humans have:
a high vertical forehead, a round and tall skull, and small browridges.
What nationality is O negative?
| Characteristic O-positive O-negative | Caucasian 37% 8% | African American 47% 4% | Asian 39% 1% | Latino-American 53% 4% |
|---|
What is the oldest blood type on earth?
Blood type A
is the most ancient, and it existed before the human species evolved from its hominid ancestors. Type B is thought to have originated some 3.5 million years ago, from a genetic mutation that modified one of the sugars that sit on the surface of red blood cells.
What blood type were denisovans?
For each ancient hominin, the researchers determined the genotypes and likely phenotypes for these blood group systems. Under the ABO system, two Neanderthals had an A1 phenotype and another had a B phenotype, while the Denisovan had
an O phenotype
.
What color was Neanderthal skin?
People who carried Neanderthal DNA there tended to have
pale skin
that burned instead of tanned, Kelso says. And the stretch that included BNC2 was just one of many, she adds: around 50 percent of Neanderthal variants linked with phenotype in her study have something to do with skin or hair color.
Could Neanderthals still exist?
But while their species is said to be extinct,
they are not entirely gone
. Large parts of their genome still lives on in us today. The last Neanderthals may have died – but their stamp on humanity will be ensured for thousands of years to come.
Where did the denisovans come from?
Denisovans are known to have lived in
Siberia
, and the Xiahe mandible is the earliest recorded human presence on the Tibetan Plateau. Though their remains have been identified in only these two locations, traces of Denisovan DNA in modern humans suggest they ranged across East Asia, and potentially western Eurasia.
Are modern humans and Neanderthals the same species?
neanderthalensis and H. sapiens are
two separate species
can now cite supporting evidence from recent genetic research. This indicates that the two interbred with each other when they met outside Africa about 55,000 years ago.
What does the morphology of the Paleoindian skull from Kennewick indicate?
The morphology of the Paleoindian skull from Kennewick indicates that it:
looks quite different from modern Native Americans’ skulls.
What killed Neanderthal?
Neanderthals became extinct around 40,000 years ago. …
extinction by interbreeding with early modern human populations
.
natural catastrophes
.
failure
or inability to adapt to climate change.
What ethnic group has the most Neanderthal DNA?
East Asians
seem to have the most Neanderthal DNA in their genomes, followed by those of European ancestry. Africans, long thought to have no Neanderthal DNA, were recently found to have genes from the hominins comprising around 0.3 percent of their genome.
What were three of the major milestones in human evolution?
The evolution of modern humans from our hominid ancestor is commonly considered as having involved four major steps:
evolving terrestriality, bipedalism, a large brain (encephalization) and civilization
.
Which of the following features found in Neanderthals would not be an adaptation for cold environments?
Neanderthal faces had prominent cheekbones and wide noses previously thought to have developed in extremely cold periods because large sinuses were needed to warm air as it was inhaled. … This suggests the
facial features
were not related to adaptation to cold.
What is the interpretation for the hobbit found on the island of Flores?
Almost immediately, interpretations of this Hobbit skeleton met with fierce criticism from both anthropologists and evolutionary biologists. The poor
Hobbit was accused of being an example not of a small new human species, but an abnormal Homo sapiens, bearing any of a variety of growth and hormonal conditions
.
The dominant idea has been that H. floresiensis was descended from
the larger Homo erectus
, an extinct human species that once occupied Asia. Proponents believe ancestors of H. erectus were the first humans to stray out of Africa about 1.8 million years ago.
Which scientific dating technique was used to date the hobbit found in Flores Indonesia?
This team even went further by dating some of the stone tools and fossils using
paleomagnetism
(a method of determining the age of ancient sediments) and showed they were probably around 700,000 years old.
Which continent has the greatest human genetic diversity?
Africa
, the most genetically diverse continent, is where modern humans, Homo sapiens, originated. Populations on other continents are descended from groups that migrated out of Africa many tens of thousands of years ago.
Who is associated with the Acheulean complex?
Homo erectus
, the makers of the Acheulean, exhibit an increase in body mass, reduction in tooth size and enamel thickness, and concomitant increase in brain size suggesting an increase of energy expenditure by a margin of 80-85% over australopithecines (Wrangham et al., 1999).
Which continent has the least genetic diversity?
The world’s most genetically diverse countries (using their measure of what counts as genetically diverse) are in sub-Saharan
Africa
, which is the world’s poorest region. The least genetically diverse countries are in places such as Bolivia, which have low incomes, but not as low as in that region of Africa.
What does the Out of Africa model assert?
– Out of Africa model: asserts
that modern humans evolved relatively recently in Africa, migrated into Eurasia and replaced all populations
which had descended from Homo erectus. … Homo sapiens arose in one place, probably Africa (geographically this includes the Middle East).
What is the name of the tool technology created by the Neanderthals?
Summary: Archaeologists working in two Italian caves have discovered some of the earliest known examples of ancient humans using an adhesive on their stone tools — an important technological advance called ‘
hafting
.
