Xem 1-20 trên 52 kết quả Origin evolution
  • Life on Earth originated and then evolved from a universal common ancestor approximately 3.7 billion years ago. Repeated speciation and the divergence of life can be inferred from shared sets of biochemical and morphological traits, or by shared DNA sequences. These homologous traits and sequences are more similar among species that share a more recent common ancestor, and can be used to reconstruct evolutionary histories, using both existing species and the fossil record. Existing patterns of biodiversity have been shaped both by speciation and by extinction....

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  • (BQ) Ebook Earth Evolution of a habitable world is described in the context of what we know about other planets and the cosmos at large, from the origin of the cosmos to the processes that shape planetary environments and from the origins of life to the inner workings of cells. Astronomy, earth science, planetary science and astrobiology are integrated to give students the whole picture of how the Earth has come to its present state and an understanding of the relationship between key ideas in different fields.

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  • During the emergence of sociology as an academic discipline the questions about the origins, status and functions of constitutions were widely posed. Indeed, for both thematic and methodological reasons, the analysis of constitutions was a central aspect of early sociology. Sociology developed, however ambiguously, as a critical intellectual response to the theories and achievements of the Enlightenment in the eighteenth century, the political dimension of which was centrally focused on the theory and practice of constitutional rule....

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  • Understanding the origins of humanity has long been one of our foremost intellectual pursuits, and one that greatly interests the general public as evidenced by museum attendance and by numerous media productions and general interest publications. Progress toward an improved understanding of our heritage is a continuing challenge for the scientific community, requiring advances in a range of disciplines that include archaeology, anthropology, geology, biology, oceanography, and genetics, and particularly research advances in areas where two or more of these fields intersect.

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  • When did humans appear? What is it that makes us different from the rest of the animals? In what way did language develop? Why is it so important to have deciphered the sequence of the human genome? This book offers answers to these and many other questions about the mysteries and marvels of human evolution. Scientists maintain that modern humans originated in Africa because that is where they have found the oldest bones.

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  • The pattern of treatment of issues in this new edition follows that established with the fourth edition; nevertheless there are important changes. For instance, in the preface to the previous edition I wrote, “The five years since the third edition of Human Evolution: An Illustrated Introduction have been an extraordinarily productive time for paleoanthropology,” not least because of the number of new species of early humans that had been discovered. The same can be said of the period between the fourth and fifth editions. Since 1999 four new species of hominin have been announced.

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  • The original edition of Minds, Machines, & Evolution, published by Bantam Books in June, 1988, produced some enthusiastic responses, and readers were still tracking me down to ask how they could obtain a copy long after it had gone out of print. So, when, early in 1996, Jim Baen decided to put together a second, similar collection, Rockets, Redheads, & Revolution, we thought it would be a good idea to reissue the first also as a companion volume.

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  • Isn’t it strange that the animal we used to be developed into the creature that we now are? How – and why – did human intelligence and culture evolve? How did we evolve minds, philosophies and technologies? And now that we have them, where are they taking us? The orthodox answer to these questions looks inside our brains to see what they are made of and how the various components operate.

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  • Chapter 20 describes evolution at the molecular level. In this chapter, the following content will be discussed: The origin of life on earth, the evolution of genomes, the organization of genomes, a comprehensive example: rapid evolution in the immune response and in HIV.

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  • Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy.[1] Biology is a vast subject containing many subdivisions, topics, and disciplines.

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  • "It's the animal in us," we often hear when we've been bad. But why not when we're good? Primates and Philosophers tackles this question by exploring the biological foundations of one of humanity's most valued traits: morality. In this provocative book, primatologist Frans de Waal argues that modern-day evolutionary biology takes far too dim a view of the natural world, emphasizing our "selfish" genes. Science has thus exacerbated our reciprocal habits of blaming nature when we act badly and labeling the good things we do as "humane.

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  • Information Theory, Evolution, and the Origin of Life presents a timely introduction to the use of information theory and coding theory in molecular biology. The genetical information system, because it is linear and digital, resembles the algorithmic language of computers. George Gamow pointed out that the application of Shannon’s information theory breaks genetics and molecular biology out of the descriptive mode into the quantitative mode, and Dr. Yockey develops this theme, discussing how information theory and coding theory can be applied to molecular biology....

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  • The costume of our progenitors was chiefly remarkable for its extreme simplicity; and, as far as we can gather, no difference in design was made between the sexes. A few leaves entwined by the stalks, the feathers of birds, the bark of trees, or roughly-dressed skins of animals were probably regarded by beaux and belles of the Adamite period as beautiful and appropriate adornments for the body, and were followed by garments made from plaited grass, which was doubtless the origin of weaving, a process which is nothing more than the mechanical plaiting of hair, wool, flax, &c.

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  • Petrology, New Perspectives and Applications is designed for advanced graduate courses and professionals in petrology. The book includes eight chapters that are focused on the recent advances and application of modern petrologic and geochemical methods for the understanding of igneous, metamorphic and even sedimentary rocks. Research studies contained in this volume provide an overview of application of modern petrologic techniques to rocks of diverse origins.

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  • In his opening address to the conference, Jon wood, who coordinates the research programme at the Institute, traced the origins of the conference to a series of exploratory conversations on the relationship between archaeology and contemporary art with independent curator Katy rochester. From the outset, wood, rochester and their colleagues in leeds sought proposals from archaeologists who were interested in sculpture and in sharing new ideas with sculpture historians.

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  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: The hidden universal distribution of amino acid biosynthetic networks: a genomic perspective on their origins and evolution...

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  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học thế giới đề tài: Chromosomal mapping, differential origin and evolution of the S100 gene family

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  • The Committee on Gravitational Physics (CGP) was organized by the National Research Council’s (NRC’s) Board on Physics and Astronomy (BPA) as part of the decadal survey Physics in a New Era. The committee’s main charges were (1) to assess the achievements in gravitational physics over the last decade and (2) to identify the most promising opportunities for research in the next decade and describe the resources necessary to realize those opportunities. This report fulfills those charges.

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  • Evolution and development are the two biological processes most associated with the idea of organic change. Indeed, the very notion of evolution originally referred to the unfolding of a preformed structure within the developing embryo and only later acquired its current meaning as the transformation of species through time. It seems, therefore, only logical to assume that the biological disciplines that study these two different phenomena- embryology, later transformed into developmental biology, and evolutionary biology, especially phylogenetics-would be closely related....

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  • Every preface in olden time was wont to begin with the address "Lectori Benevolo"--the indulgence of the reader being thereby invoked and, it was hoped, assured. In that the writer of this at least would have his share, even though neither subject, nor author, that he introduces, may stand in need of such a shield. Local histories are yearly becoming more numerous. In few places is there more justification for one than here. I. The beauty of the scenery is not well known. This book should do something to vindicate its character. There is no need on this point to go back to the time of...

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