A fascinating and detailed examination of the evolution--and occasional devolution--of sexuality in microorganisms and more complex forms of life. Margulis and Sagan trace sex from its inauspicious beginnings in bacteria threatened by ultraviolet radiation to its intimate relation with the origin of mitotic division of nucleated cells. The origin of meiotic sex through cannibalism followed by centriole reproductive tardiness and the connection of cell symbiosis to sex and differentiation are explored. "The authors have not only given us a new and exiting scenario for the evolution of sex,...
A fascinating and detailed examination of the evolution--and occasional devolution--of sexuality in microorganisms and more complex forms of life. Mar...
How do new species evolve? Although Darwin identified inherited variation as the creative force in evolution, he never formally speculated where it comes from. His successors thought that new species arise from the gradual accumulation of random mutations of DNA. But despite its acceptance in every major textbook, there is no documented instance of it. Lynn Margulis and Dorion Sagan take a radically new approach to this question. They show that speciation events are not, in fact, rare or hard to observe. Genomes are acquired by infection, by feeding, and by other ecological associations, and...
How do new species evolve? Although Darwin identified inherited variation as the creative force in evolution, he never formally speculated where it co...
This sophisticated coloring book is a beautifully detailed illustration of the world's living diversity. It is written for science students, teachers, and anyone else who is curious about the extraordinary variety of living things that inhabit this planet. It opens with an introduction to the classification systems, distinctions between prokaryotic and eukaryotic cells, an introduction to life cycles, Earth history, and an explanation of how to best use this coloring book. The next section is organized by communities in which the organisms live. The final section details the variety of major...
This sophisticated coloring book is a beautifully detailed illustration of the world's living diversity. It is written for science students, teachers,...
Now published by Academic Press and revised from the author's previous Five Kingdoms 3rd edition, this extraordinary, all inclusive catalogue of the world's living organisms describes the diversity of the major groups, or phyla, of nature's most inclusive taxa. Developed after consultation with specialists, this modern classification scheme is consistent both with the fossil record and with recent molecular, morphological and metabolic data. Generously illustrated, now in full color, Kingdoms and Domains is remarkably easy to read. It accesses the full range of life forms that still inhabit...
Now published by Academic Press and revised from the author's previous Five Kingdoms 3rd edition, this extraordinary, all inclusive catalogue of the w...
More than eighty years ago, before we knew much about the structure of cells, Russian botanist Boris Kozo-Polyansky brilliantly outlined the concept of symbiogenesis, the symbiotic origin of cells with nuclei. It was a half-century later, only when experimental approaches that Kozo-Polyansky lacked were applied to his hypotheses, that scientists began to accept his view that symbiogenesis could be united with Darwin's concept of natural selection to explain the evolution of life. After decades of neglect, ridicule, and intellectual abuse, Kozo-Polyansky's ideas are now endorsed by...
More than eighty years ago, before we knew much about the structure of cells, Russian botanist Boris Kozo-Polyansky brilliantly outlined the concep...
This is an edited record of the dialogue of eminent scientists attending the third conference in the series on the Origins of Life, supported by a grant from the Biosciences Program of the National Aeronautics and Space Ad ministration. The first conference at Princeton, 1967, was held under the direction of Dr. Frank Fremont-Smith at the time when the Interdisciplinary Communications Program (ICP) was associated with the New York Academy of Sciences. was integrated into the Office of the Assistant Secretary for In 1968, ICP Science of the Smithsonian Institution, and the entire operation was...
This is an edited record of the dialogue of eminent scientists attending the third conference in the series on the Origins of Life, supported by a gra...
This is an edited record of the dialogue of eminent scientists attending the fourth conference in the series of the origins of life, supported by a grant from the Biosciences Program of the National Aeronautics and Space Admini stration. The first conference at Princeton, 1967, was held under the direc tion of Dr. Frank Fremont-Smith at the time when the Interdisciplinary Co m munications Program (lCP) was associated with the New York Academy of Sciences. In 1968, ICP was integrated into the Office of the Assistant Secretary for Science of the Smithsonian Institution, and the entire operation...
This is an edited record of the dialogue of eminent scientists attending the fourth conference in the series of the origins of life, supported by a gr...
