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Modern Humans - Their African Origin and Global Dispersal (Hardcover)
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Modern Humans - Their African Origin and Global Dispersal (Hardcover)
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Modern Humans is about the most recent-and perhaps the most
important-phase of human evolution: the appearance of anatomically
modern people (Homo sapiens) in Africa less than a quarter of a
million years ago and their subsequent spread throughout the world.
Most of the features that render living human beings unique among
all forms of life evolved or developed with Homo sapiens, and in
Modern Humans, John F. Hoffecker argues that humans represent a
"major transition" in evolution with respect to the storage,
transmission, and translation of information, as well as a quantum
leap in living-system complexity. Modern Humans synthesizes data
from genetics (including the rapidly growing body of ancient DNA),
the human fossil record, and archaeology relating to the African
origins and global dispersal of anatomically modern people. The
book begins by placing humans into the broad context of the
evolution of life, emphasizing the fundamental role of genetic and
nongenetic forms of information in living systems, and how changes
in information are tied to "major transitions" in evolution. For
more than a hundred thousand years, a diverse "near modern" human
population, characterized by the retention of some archaic skeletal
traits and possibly lacking the full suite of cognitive faculties
found in living people, occupied the African continent and expanded
briefly into the adjoining Arabian Peninsula and Levant. The
immediate ancestors of all living maternal and paternal lineages
possibly emerged from within this population, spreading initially
throughout Africa before beginning a second-and ultimately
global-dispersal no later than 60,000 years ago. The later chapters
of this book recount their rapid expansion into southern Asia and
Australia, northern Eurasia and Beringia, and throughout the
Americas.
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