The Processes Of Ongoing Human Evolution

Excerpt from The Processes of Ongoing Human Evolution A hundred years ago Charles Darwin published his classic explana tion of evolution through natural selection. The work deals with the origin of species, as the title indicates; it is retrospective in outlook, explaining past events; and almost no mention is made of man, except a comment that in the distant 'future light will be thrown on the origin of man and his history. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Additional Contributing Authors Include Arno G. Motulsky, Frederick S. Hulse And Earle L. Reynolds. Six Lectures Delivered At The 59th Annual Meeting Of The American Anthropological Association Held At Mexico City On December 28, 1959.

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The hominin fossil record documents a history of critical evolutionary events that have ultimately shaped and defined what it means to be human, including the origins of bipedalism; the emergence of our genus Homo; the first use of stone tools; increases in brain size; and the emergence of Homo sapiens, tools, and culture. The Earth's geological record suggests that some evolutionary events were coincident with substantial changes in African and Eurasian climate, raising the possibility that critical junctures in human evolution and behavioral development may have been affected by the environmental characteristics of the areas where hominins evolved. Understanding Climate's Change on Human Evolution explores the opportunities of using scientific research to improve our understanding of how climate may have helped shape our species. Improved climate records for specific regions will be required before it is possible to evaluate how critical resources for hominins, especially water and vegetation, would have been distributed on the landscape during key intervals of hominin history. Existing records contain substantial temporal gaps. The book's initiatives are presented in two major research themes: first, determining the impacts of climate change and climate variability on human evolution and dispersal; and second, integrating climate modeling, environmental records, and biotic responses. Understanding Climate's Change on Human Evolution suggests a new scientific program for international climate and human evolution studies that involve an exploration initiative to locate new fossil sites and to broaden the geographic and temporal sampling of the fossil and archeological record; a comprehensive and integrative scientific drilling program in lakes, lake bed outcrops, and ocean basins surrounding the regions where hominins evolved and a major investment in climate modeling experiments for key time intervals and regions that are critical to understanding human evolution.

*Includes pictures *Includes online resources and a bibliography for further reading "We must, however, acknowledge...that man with all his noble qualities... still bears in his bodily frame the indelible stamp of his lowly origin." - Charles Darwin Ever since the human mind developed the capacity for thought, people have pondered not just the meaning of life, but the genesis of the world, the universe, and all the natural marvels and precious forms of life within it. To this day, all of these intricate subjects continue to be matters of great contention, and they are often best encapsulated in the debate between creationism and evolution. On the one hand are those who are adamant that it was God, or some other supreme being, that designed and crafted every detail of the universe, as evidenced by the plethora of creation myths from various creeds and traditions. Among one of the most well-known etiological tales is the classic story of the Christian God who constructed the world in 6 days, and man and woman out of clay and man's rib, respectively. This is a concept that many still cling to today; approximately 38% of Americans believed in creationism in 2017, as reported by a Gallup Poll. Then, there are the more obscure narratives, such as the Japanese creation myth, which recounts how the god and goddess, Izanagi and Izanami, birthed from "elements mixed together with one germ of life," shaped the Japanese islands with some mud and the aid of a sacred staff. The Mayans preached about Tepeu, the maker of all things, and Gucumatz, the "feathered spirit," who produced the world with nothing but their thoughts, and placed on Earth the first quartet of humans fashioned out of white and yellow corn. On the other hand are those who believe (or as they would say, "accept") evolution and scientific processes as facts. As enthralling as such creation myths may be, insist critics of creationism, who campaign for their retirement, there is not a sound shred of logic behind these time-worn tales. Renowned theoretical physicist Stephen Hawking, arguably one of the most brilliant people to have ever lived, stated, "Before we understand science, it is natural to believe that God created the universe. But now science offers a more convincing explanation." His sentiments are echoed by famous atheist and evolutionary biologist Richard Dawkins in The Selfish Gene: "Today the theory of evolution is about as much open to doubt as the theory that the earth goes round the sun..." "Some claim that evolution is just a theory, as if it were merely an opinion," esteemed astrophysicist Neil deGrasse Tyson, another leading proponent of evolution, adds. "The theory of evolution - like the theory of gravity - is a scientific fact. Evolution really happened. Accepting our kinship with all life on Earth is not only solid science. In my view, it's also a soaring spiritual experience." Most scientists believe the evolution of humans has a history as long as life itself. Anatomically modern humans and all other life that has existed on the planet first came about from the single-celled microorganisms that emerged approximately 4 billion years ago. Through the processes of mutation and natural selection, all forms of life developed, and this continuous lineage of life makes it difficult to say precisely when one species completely separates from another. In other words, scientists still debate when a human became a human rather than the ancestor species that came before. In order to understand the history of human evolution, an understanding of the mechanisms that essentially "created" modern humans needs to be understood. These processes are natural selection and evolution. Human Evolution: The History of the Evolution and Natural Selection Processes that Gave Rise to Modern Humans examines how humans evolved from microorganisms, and the evolutionary theories that came about in the 19th century to explain it all.

The advances made possible by the development of molecular techniques have in recent years revolutionized quantitative genetics and its relevance for population genetics. Population Genetics and Microevolutionary Theory takes a modern approach to population genetics, incorporating modern molecular biology, species-level evolutionary biology, and a thorough acknowledgment of quantitative genetics as the theoretical basis for population genetics. Logically organized into three main sections on population structure and history, genotype-phenotype interactions, and selection/adaptation Extensive use of real examples to illustrate concepts Written in a clear and accessible manner and devoid of complex mathematical equations Includes the author's introduction to background material as well as a conclusion for a handy overview of the field and its modern applications Each chapter ends with a set of review questions and answers Offers helpful general references and Internet links