A New Look at Evolution
By (author) Lynn Margulis
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Symbiotic Planet by Lynn Margulis
Book DescriptionAlthough Charles Darwin's theory of evolution laid the foundations of modern biology, it did not tell the whole story. Most remarkably, The Origin of Species said very little about, of all things, the origins of species. Darwin and his modern successors have shown very convincingly how inherited variations are naturally selected, but they leave unanswered how variant organisms come to be in the first place.In Symbiotic Planet, renowned scientist Lynn Margulis shows that symbiosis, which simply means members of different species living in physical contact with each other, is crucial to the origins of evolutionary novelty. Ranging from bacteria, the smallest kinds of life, to the largest--the living Earth itself--Margulis explains the symbiotic origins of many of evolution's most important innovations. The very cells we're made of started as symbiotic unions of different kinds of bacteria. Sex--and its inevitable corollary, death--arose when failed attempts at cannibalism resulted in seasonally repeated mergers of some of our tiniest ancestors. Dry land became forested only after symbioses of algae and fungi evolved into plants. Since all living things are bathed by the same waters and atmosphere, all the inhabitants of Earth belong to a symbiotic union. Gaia, the finely tuned largest ecosystem of the Earth's surface, is just symbiosis as seen from space. Along the way, Margulis describes her initiation into the world of science and the early steps in the present revolution in evolutionary biology; the importance of species classification for how we think about the living world; and the way "academic apartheid" can block scientific advancement. Written with enthusiasm and authority, this is a book that could change the way you view our living Earth.
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Book DetailsISBN: 9780465072729
(204mm x 127mm x 10mm)
Imprint: Basic Books
Publisher: The Perseus Books Group
Publish Date: 17-Sep-1999
Country of Publication: United States
Books By Author Lynn Margulis
Chimeras and Consciousness, Paperback (May 2011)
Scientists elucidate the astounding collective sensory capacity of Earth and its evolution through time.
Symbiogenesis, Hardback (June 2010)
Many years ago Russian botanist Boris Kozo-Polyansky brilliantly outlined the concept of symbiogenesis, the symbiotic origin of cells with nuclei. Kozo-Polyansky's ideas are endorsed by virtually all biologists. This title offers a translation of Kozo-Polyansky's seminal work.
Kingdoms and Domains, Hardback (April 2009)
A catalogue of the world's living organisms describing the diversity of the major groups, or phyla, of nature's most inclusive taxa. It carries a classification scheme that aims to be consistent with both the fossil record and, the molecular and metabolic data. It logically classifies the life forms according to their evolutionary relationships.
Acquiring Genomes, Paperback (May 2003)» View all books by Lynn Margulis
From one of the great iconoclasts of modern biology, Lynn Margulis, a groundbreaking new theory of the origins of species
US Kirkus Review » Let's hear it for the bugs - not your creepy-crawlies, but bacteria, the be-all (and possible end-all) of life on Earth, according to Margulis. Here she describes the once radical theory that cells have incorporated bacteria to mutual advantage and uses that as a springboard to summarize a still more radical theory of how species evolve. She calls it serial endosymbiosis theory (SET). It is now conventional wisdom that the energy-producing mitochondria in animal cells were once free-living bacteria. Indeed, they have their own genes - different from nuclear DNA. Margulis provides many examples of fruitful symbioses, including sexual union itself as the merger of sperm and egg cells. According to SET, there are successive steps or mergers that led to multicellular life forms: In steps one and two the oldest bacterial forms - the non-oxygen breathing "archaebacteria" found in deep ocean vents - merged with swimming bacteria two billion years ago to form the nuclear heart of animal, plant, and fungal cells and provide the cilia for swimming. Later steps introduced a third partner able to breathe oxygen and added the ability to engulf and digest food (phagocytosis). The last step involved engulfing yet another bacterium - but one these various new forms of life could not digest: bright green photosynthetic bacteria. The bone of contention here is the origin of ciliated cells - critical to evolution for their vital role as sperm tails, among other things. Margulis has a theory about their origin, but as they say, more research is needed. Margulis's theory also dictates a change in taxonomy to five kingdoms: bacteria at the base, then "protoctists" (algae, slime molds, ciliates) next, and then animals, plants, and fungi. Finally, she defends Lovelock's Gala theory, which she interprets to mean that enormous interacting ecosystems on Earth achieve homeostasis rather than that the planet is in the hands of some benign Mother Earth. This is vintage Margulis - personal, autobiographical, passionate, argumentative, at times over the top, but full of ideas - at least some of which, in the past, have proved to be right. (Kirkus Reviews)
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Author Biography - Lynn Margulis
Lynn Margulis, Distinguished Professor in the Department of Geosciences at the University of Massachusetts at Amherst, has been a member of the National Academy of Sciences since 1983. She is best known for her pathbreaking work on the bacterial origins of cell organelles and for her collaboration with James Lovelock on Gaia theory. Her previous books include Symbiosis in Cell Evolution; Five Kingdoms (with K. V. Schwartz); and (with Dorion Sagan) Origins of Sex, Garden of Microbial Delights, What Is Life?, What Is Sex?, and Slanted Truths: Essays on Gaia, Symbiosis and Evolution.
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