Exam 12: The Origin and Dispersal of Modern Humans
Early rock art from Africa may be as old as ________ years.
D
The Abrigo do Lagar Velho specimen is an important discovery that aids in the understanding of possible interbreeding between Neandertals and anatomically modern H. sapiens because the remains
C
Why do most paleoanthropologists agree that several fossil forms, dating back to 100,000 ya, should be included in as fully modern humans?
Most paleoanthropologists agree that several fossil forms dating back to around 100,000 years ago should be included as fully modern humans (Homo sapiens) due to a combination of anatomical, genetic, and behavioral evidence that aligns these fossils with our own species.
Anatomical Evidence:
The fossil record from this period shows individuals with skeletal features that are within the range of variation seen in contemporary human populations. These features include a rounded skull with a vertical forehead, a reduced brow ridge, a smaller and less prognathic (projecting) face, a chin (mental eminence), and lighter skeletal build compared to earlier hominins. The cranial capacity of these fossils is also within the range of modern humans, indicating similar brain size and structure.
Genetic Evidence:
Advances in ancient DNA technology have allowed scientists to extract and analyze genetic material from some of these fossils. The genetic evidence supports the anatomical findings, showing a close relationship between these ancient individuals and present-day humans. The genetic continuity suggests that these individuals belong to our species and contribute to the genetic diversity of modern Homo sapiens.
Behavioral Evidence:
Archaeological sites dating back to around 100,000 years ago show evidence of behavior that is typically associated with modern humans. This includes the use of advanced tools, evidence of symbolic thought (such as personal ornaments and art), the use of pigments, and the development of complex social structures. These behaviors suggest a level of cognitive and cultural development that is consistent with what we see in modern humans.
Overall, the combination of anatomical similarities, genetic continuity, and advanced behaviors leads most paleoanthropologists to conclude that these fossil forms represent early members of our own species, Homo sapiens. The inclusion of these fossils within our species helps to trace the evolution and dispersal of modern humans across the globe.
The Upper Paleolithic culture period began in Western Europe about ________ years ago.
According to the most recent evidence, the first modern Homo sapiens evolved in Africa around _______ years ago.
The skeletal remains of Homo floresiensis are notable for each of the following characteristics or assumptions except
Current evidence indicates that the earliest anatomically modern Homo sapiens fossils are from which geographical location?
Two different Replacement Models have been proposed. They differ from each other with respect to which of the following?
Researchers have recently sequenced the genetic identities of nine ancient fully modern H. sapiens from sites in Italy, France, the Czech Republic, and Russia. What did this research focus on?
Genetic evidence indicates that all native Australians are descendants of a single migration 50 kya.
The partial replacement models have been bolstered by the sequencing of Neandertal genome.
Archaeological sites in Australia have been dated to __________ years ago.
It is hypothesized that some population of inhabitants from Indonesia was the first group to colonize Australia.
Bone tools, beads, and decorated ocher fragments were found at Blombos Cave as old as 73,000 years old.
The bow and arrow seems to have first appeared during the Magdalenian.
Discuss the evidence that suggests modest interbreeding took place between Neandertals and modern humans.
The morphology of the child's skeleton from Abrigo do Lagar Velho in Portugal has been cited as support for the regional continuity model for understanding modern human origins.
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