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Author: Horst Wilkens Publisher: Springer ISBN: 3662545128 Category : Science Languages : en Pages : 223
Book Description
This book provides fascinating insights into the development and genetics of evolutionary processes on the basis of animals living in the dark, such as the Astyanax cave fish. Biologically functionless traits show high variability, which results from neutral deleterious mutations no longer being eliminated by natural selection, which normally acts to preserve functional capability. These negative mutations accumulate until the traits they are responsible for become rudimentary or even lost. The random genetic basis of regressive evolution is in accordance with Nei’s Neutral Theory of Molecular Evolution, which applies to the molecular level. Such processes are particularly conspicuous in species living in constant darkness, where, for example in Astyanax, all traits depending on the exposure to light, like eyes, pigmentation, visually triggered aggressive behaviour, negative phototaxis, and several peripheral outcomes of circadian rhythmicity, are useless and diminish. In compensation constructive traits like taste, olfaction or the lateral line senses are improved by selection and do not show variability. Regressive and constructive traits inherit independently, proving that the rudimentation process is not driven by pleiotropic linkage between them. All these traits are subject to mosaic evolution and exhibit unproportional epistatic gene effects, which play an important role in evolutionary adaptation and improvement. Offering valuable evolutionary insights and supplemented by a wealth of illustrations, this book will appeal to evolutionary and developmental biologists alike.
Author: Horst Wilkens Publisher: Springer ISBN: 3662545128 Category : Science Languages : en Pages : 223
Book Description
This book provides fascinating insights into the development and genetics of evolutionary processes on the basis of animals living in the dark, such as the Astyanax cave fish. Biologically functionless traits show high variability, which results from neutral deleterious mutations no longer being eliminated by natural selection, which normally acts to preserve functional capability. These negative mutations accumulate until the traits they are responsible for become rudimentary or even lost. The random genetic basis of regressive evolution is in accordance with Nei’s Neutral Theory of Molecular Evolution, which applies to the molecular level. Such processes are particularly conspicuous in species living in constant darkness, where, for example in Astyanax, all traits depending on the exposure to light, like eyes, pigmentation, visually triggered aggressive behaviour, negative phototaxis, and several peripheral outcomes of circadian rhythmicity, are useless and diminish. In compensation constructive traits like taste, olfaction or the lateral line senses are improved by selection and do not show variability. Regressive and constructive traits inherit independently, proving that the rudimentation process is not driven by pleiotropic linkage between them. All these traits are subject to mosaic evolution and exhibit unproportional epistatic gene effects, which play an important role in evolutionary adaptation and improvement. Offering valuable evolutionary insights and supplemented by a wealth of illustrations, this book will appeal to evolutionary and developmental biologists alike.
Author: Naoyuki Fuse Publisher: Springer Science & Business Media ISBN: 4431541470 Category : Science Languages : en Pages : 67
Book Description
How organisms come to possess adaptive traits is a fundamental question for evolutionary biology. Although it is almost impossible to demonstrate evolution in the laboratory, this issue can be approached by using an unusual organism, “Dark-fly”: Drosophila melanogaster kept in complete darkness for 57 years through 1,400 generations, which corresponds to 28,000 years in terms of human generations. Has Dark-fly adapted to an environment of total darkness? If so, what is the molecular nature of the adaptation? In Evolution in the Dark, the remarkable findings from the Dark-fly project performed at Kyoto University are presented. It was found that Dark-fly did not have poor eyesight, but rather exhibited higher phototaxis ability and displayed lengthened bristles on the head that function as tactile receptors. Circadian rhythms were weakened but still retained in Dark-fly. With recent progress in genome science enabling researchers to perform whole genome sequencing for Dark-fly, a large number of mutations were identified including genes encoding a light receptor, olfactory receptors, and enzymes involved in neural development. The Dark-fly project is a simple but very long-term experiment. Combined with advanced techniques in genetics and genomics, it is a valuable tool for understanding the molecular nature of adaptive evolution.
Author: Hyginus Mathurin Publisher: iUniverse ISBN: 1462038840 Category : Religion Languages : en Pages : 141
Book Description
In a world of technological revelations and human genius, organized religions continue to hold on to the element of faith. There are many religious questions that are satisfactorily answered in science, yet conveniently ignored by the faithful. Amidst the numerous scientific breakthroughs of the 21st Century, some still see science as the opposite of religion, even when the evidence is convincing that the two are complementary. Evolution of Darkness invites its readers to step out of the box to consider a few ideas on the dogmas that dominate religious thoughts and influences. On Christmas Eve 2012, I was invited to a candle lighting ceremony when it struck me that the Darkness we were driving out sat at the center of the flames we were holding in our hands. In other words, the Darkness in the center of the candle was responsible for the flame that provided the light in the room. This discovery enhanced my perception that the Darkness we see is the color of the energy that permeates the cosmos. Evolution of Darkness contends that this energy is intelligent and is the only authority capable of creating and sustaining this universe we live in. Every aspect of life, whether animate or inanimate, represents an expression of the Evolution of Darkness. The only legitimate expression of the God of creation is Darkness/Energy. Everything from electromagnetism to righteousness and faith are attributes of Dark Energy. From a realistic perspective, the Creator of this violent system is not a morally good God, but a God who has created a system that satisfies His needs. Everything we see around us is necessary and creates the perfect balance for the constant operation of the universe.
Author: Teri Terry Publisher: Charlesbridge Publishing ISBN: 1632899124 Category : Young Adult Fiction Languages : en Pages : 416
Book Description
A thrilling showdown brings the Dark Matter trilogy to a satsifying close. Shay is trapped at the Multiverse compound while looking for the real Callie, and an unforgiving Kai is her best chance at outsmarting Alex and saving countless lives. Shay has left Kai once again by following Alex to his Multiverse compound. Her goal is to find the real Callie, but Shay discovers that the younger girl has no memory of her past. Their hope is to leave the community. While Shay pretends to be a devoted follower, Alex makes his own plans to use Shay to spread the epidemic he caused with his dark matter experiments. The survivors will be only the most worthy humans--those who evolve special abilities. The opportunistic Freja further poisons Kai's memories of his girlfriend. Angry and hurt, Kai doubles down on his mission to reveal that his former stepfather is behind the epidemic, but he has little luck convincing the authorities--until it's almost too late to save Shay from a fate worse than death.
Author: Michael Peter Bolus Publisher: ISBN: 9781516582747 Category : Languages : en Pages : 246
Book Description
Through an engaging and enlightening selection of readings and articles, The Light in the Dark: The Evolution, Mechanics, and Purpose of Cinema investigates cinema from a variety of diverse perspectives. The anthology explores the technical aspects of the filmmaking process, the ways in which certain elements of cinema are creatively combined toward emotional and intellectual effect, and the myriad ways cinema both interacts with and reflects culture. The opening chapter is comprised of readings that examine the nature and origin of cinematic technique, speaking to its early development as both a commercial and artistic endeavor. The second chapter reviews the core components of filmmaking, including mise-en-scène, editing, sound design, acting, and shot composition. In the final chapter, students explore film in cultural context. The readings examine particular stages in cinema's evolution, the role and implications of complex gender constructs, and the manner in which race and racial tensions have manifested themselves in filmic narratives. A highly contemporary and accessible anthology, The Light in the Dark is an excellent resource for courses in filmmaking and film studies. Michael Peter Bolus is the CEO of MEANSTREET Productions, a founding partner of the educational consulting firm CampusPro Group, the department chair of the Liberal Arts Program at The Los Angeles Film School, and a professor of film studies at Santa Monica College. He holds a Ph.D. in theatre studies from the City University of New York Graduate Center and a master's degree in creative writing from Boston University. He is the author of Aesthetics and the Cinematic Narrative: An Introduction (Anthem Press), and his articles, interviews, and criticism have appeared in a wide array of academic and scholarly journals.
Author: John Van Wyhe Publisher: World Scientific ISBN: 9814458821 Category : Science Languages : en Pages : 434
Book Description
“The facts of variability, of the struggle for existence, of adaptation to conditions, were notorious enough; but none of us had suspected that the road to the heart of the species problem lay through them, until Darwin and Wallace dispelled the darkness.”T H Huxley (1887)Darwin is one of the most famous scientists in history. But he was not alone. Comparatively forgotten, Wallace independently discovered evolution by natural selection in Southeast Asia. This book is based on the most thorough research ever conducted on Wallace's voyage. Closely connected, but worlds apart, Darwin and Wallace's stories hold many surprises. Did Darwin really keep his theory a secret for twenty years? Did he plagiarise Wallace? Were their theories really the same? How did Wallace hit on the solution, and on which island? This book reveals for the first time the true story of Darwin, Wallace and the discovery that would change our understanding of life on Earth forever.
Author: Jane Brox Publisher: Houghton Mifflin Harcourt ISBN: 0547487150 Category : History Languages : en Pages : 382
Book Description
This “superb history” of artificial light traces the evolution of society—“invariably fascinating and often original . . . [it] amply lives up to its title” (Publishers Weekly, starred review). In Brilliant, Jane Brox explores humankind’s ever-changing relationship to artificial light, from the stone lamps of the Pleistocene to the LEDs embedded in fabrics of the future. More than a survey of technological development, this sweeping history reveals how artificial light changed our world, and how those social and cultural changes in turn led to the pursuit of more ways of spreading, maintaining, and controlling light. Brox plumbs the class implications of light—who had it, who didn’t—through the centuries when crude lamps and tallow candles constricted waking hours. She identifies the pursuit of whale oil as the first time the need for light thrust us toward an environmental tipping point. Only decades later, gas street lights opened up the evening hours to leisure, which changed the ways we live and sleep and the world’s ecosystems. Edison’s bulbs produced a light that seemed to its users all but divorced from human effort or cost. And yet, as Brox’s informative portrait of our current grid system shows, the cost is ever with us. Brilliant is infused with human voices, startling insights, and timely questions about how our future lives will be shaped by light
Author: Ron Garan Publisher: ISBN: 9781732451148 Category : Astronautics Languages : en Pages : 0
Book Description
Astronaut Ron Garan shares incredible insights garnered from his life of exploration to build a positive future for all humanity.Humanity, along with all life on Earth, faces a crisis that threatens our very survival; resolving it will require a giant evolutionary leap in our consciousness. In Floating in Darkness: A Journey of Evolution, Ron Garan sees the crisis coming while on an extraordinary journey through war and peace, conflict and love -- through literal outer space and inner space.Ron shows us how to find purpose and make sense out of our divisive culture, how to become a "white blood cell" in a growing immune response to heal our world. In Floating in Darkness, he shows us how to build a restorative and positive future for all.
Author: Suzanne Anderson Publisher: Simon and Schuster ISBN: 1631520822 Category : Body, Mind & Spirit Languages : en Pages : 457
Book Description
The Way of the Mysterial Woman is for every woman who feels the call into greatness, authenticity, and meaningful living. This is The Way for women who are stepping into their lives with mind, body, heart, and soul fully engaged, ready to awaken to their true potential. We hear the clarion call, but how will we meet it? It’s almost like we need a completely new internal operating system. The Mysterial Way is the upgrade we’ve been searching for. Women’s leadership development pioneers and co-authors Suzanne Anderson and Susan Cannon know that we’re not alone in our yearning to meet this call. In fact, they assure us that this is a naturally occurring global imperative for women. The Way of the Mysterial Woman reveals a Feminine source code, helping us once and for all break through our old limitations, and effectively take our lives to the next level so we can meet the unique callings and urgent challenges of these dynamic times. This is not a passive book for armchair travelers. Drawing upon real life success stories, based on their 12 years of running University certificate women’s leadership programs, readers are guided through a step-by-step, transformative “Mysterial Sequence.” Each interactive chapter offers practical and fun insights and practices that compel us toward genuine shifts and solid growth. The Way of the Mysterial Woman is a blend of cutting edge transformational psychology, ancient Mystery school secrets, and visionary evolutionary thinking delivered in a warm, down-to-earth style. Here is the elegant code we‘ve been searching for that finally unlocks our greatest potential.
Author: Isabel Thomas Publisher: Bloomsbury Publishing USA ISBN: 1547600241 Category : Juvenile Nonfiction Languages : en Pages : 49
Book Description
“A rare pleasure ... a true story of adaptation and hope.” -Wall Street Journal Powerful and visually spectacular, Moth is the remarkable evolution story that captures the struggle of animal survival against the background of an evolving human world in a unique and atmospheric introduction to Darwin's theory of Natural Selection. “This is a story of light and dark...” Against a lush backdrop of lichen-covered trees, the peppered moth lies hidden. Until the world begins to change... Along come people with their magnificent machines which stain the land with soot. In a beautiful landscape changed by humans how will one little moth survive? A clever picture book text about the extraordinary way in which animals have evolved, intertwined with the complication of human intervention. This remarkable retelling of the story of the peppered moth is the perfect introduction to natural selection and evolution for children. A 2020 AAAS/Subaru SB&F Prize for Excellence in Science Books Finalist! A School Library Journal Best Book of 2019! A Horn Book Best Book of 2019! A Shelf Awareness Best Book of 2019!
Author: Horst Wilkens
Author: Horst Wilkens
Author: Naoyuki Fuse
Author: Hyginus Mathurin
Author: Teri Terry
Author: Michael Peter Bolus
Author: John Van Wyhe
Author: Jane Brox
Author: Ron Garan
Author: Suzanne Anderson
Author: Isabel Thomas