Ger Wahre Parthenogenesis Bei
DOWNLOAD
Download Ger Wahre Parthenogenesis Bei PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Ger Wahre Parthenogenesis Bei book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Wahre Parthenogenesis Bei Schmetterlingen Und Bienen
DOWNLOAD
Author : Carl Theodor Ernst von Siebold
language : de
Publisher:
Release Date : 1856
Wahre Parthenogenesis Bei Schmetterlingen Und Bienen written by Carl Theodor Ernst von Siebold and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1856 with categories.
Wahre Parthenogenesis Bei Schmetterlingen Und Bienen
DOWNLOAD
Author : Karl Theodor Ernst Von Siebold
language : de
Publisher:
Release Date : 1856
Wahre Parthenogenesis Bei Schmetterlingen Und Bienen written by Karl Theodor Ernst Von Siebold and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1856 with categories.
Wahre Parthenogenesis Bei Schmetterlingen Und Bienen
DOWNLOAD
Author : Karl Theodor Ernst Von Siebold (Prof.)
language : de
Publisher:
Release Date : 1856
Wahre Parthenogenesis Bei Schmetterlingen Und Bienen written by Karl Theodor Ernst Von Siebold (Prof.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1856 with categories.
Wahre Parthenogenesis Bei Schmetterlingen Und Bienen
DOWNLOAD
Author : Carl Th. Ernst Siebold
language : de
Publisher:
Release Date : 1856
Wahre Parthenogenesis Bei Schmetterlingen Und Bienen written by Carl Th. Ernst Siebold and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1856 with Bees categories.
Wahre Parthenogenesis Bei Schmetterlingen Und Bienen Ein Beitrag Zur Fortpflanzungsgeschichte Der Thiere Etc
DOWNLOAD
Author : Carl Theodor Ernst von SIEBOLD
language : de
Publisher:
Release Date : 1856
Wahre Parthenogenesis Bei Schmetterlingen Und Bienen Ein Beitrag Zur Fortpflanzungsgeschichte Der Thiere Etc written by Carl Theodor Ernst von SIEBOLD and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1856 with categories.
Biogeography And Taxonomy Of Honeybees
DOWNLOAD
Author : Friedrich Ruttner
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Biogeography And Taxonomy Of Honeybees written by Friedrich Ruttner and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Science categories.
Honeybees are as small as flies or as large as hornets, nesting in nar row cavities of trees and rocks or in the open on large limbs of trees 30 m above ground. They occur in tropical zones and in the forests of the Ural mountains, they survive seven months of winter and even longer periods of drought and heat. Historically, they lived through a extended time of stagnation in the tropics from the mid-Tertiary, but then experienced an explosive evolution during the Pleistocene, re sulting in the conquest of huge new territories and the origin of two dozen subspecies in Apis mellifera. This vast geographic and ecologic diversification of the genus Apis was accompanied by a rich morphological variation, less on the level of species than at the lowest rank, the subspecies level. Variation being exclusively of a quantitative kind at this first step of speciation, tradi tional descriptive methods of systematics proved to be unsatisfactory, and honeybee taxonomy finally ended up in a confusing multitude of inadequately described units. Effective methods of morphometric-sta tistical analysis of honeybee popUlations, centered on limited areas, have been developed during the last decades. Only the numerical characterization of the populations, together with the description of behavior, shows the true geographic variability and will end current generalizations and convenient stereotypes.
Lost Sex
DOWNLOAD
Author : Isa Schön
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-09-22
Lost Sex written by Isa Schön and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-09-22 with Science categories.
Sex is the queen of problems in evolutionary biology. Generations of researchers have investigated one of the last remaining evolutionary paradoxes: why sex exists at all. Given that sexual reproduction is costly from an evolutionary point of view, one could wonder why not all animals and plants reproduce asexually. Dozens of contemporary hypotheses attempt to explain the prevalence of sex and its advantages and predict the early extinction of fully asexual lineages. The major theme of this book is: what is the fate of animal and plant groups in which sex is lost? Initial chapters discuss theory behind asexual life: what major disadvantages do asexual groups have to face, what are the genetic and ecological consequences and what does this theory predict for more applied aspects of asexual life, for example in agricultural pests, diseases as well as in cultural crops such as grapes. Cases studies in many animals (focusing on both invertebrates and vertebrates) and plants reveal parallel, but also singularly novel adaptations to the absence of meiosis and syngamy. And last but not least, are asexuals really doomed to early extinction or do genuine ancient asexuals exist? This book assembles contributions from the most important research groups dealing with asexual evolution in eukaryotes. It is a milestone in research on parthenogenesis and will be useful to undergraduate as well as graduate students and to senior researchers in all fields of evolutionary biology, as the paradox of sex remains its queen of problems.
A Historical Catalogue Of Scientists And Scientific Books
DOWNLOAD
Author : Robert Mortimer Gascoigne
language : en
Publisher: Scholarly Title
Release Date : 1984
A Historical Catalogue Of Scientists And Scientific Books written by Robert Mortimer Gascoigne and has been published by Scholarly Title this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Science categories.
Apomixis In Plants
DOWNLOAD
Author : Lenn Jerling
language : en
Publisher: Routledge
Release Date : 2017-11-22
Apomixis In Plants written by Lenn Jerling and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-22 with Science categories.
Apomixis in Plants presents a comprehensive review of different aspects of asexual seed formation in plants. This is important in plant research since apomixis could greatly facilitate breeding in important crops. It is also interesting theoretically because it carries problems related to genetic variation and evolution to its extreme. The book features a broad selection of topics, including a historical review of ideas and landmarks in the field; comparisons with other types of asexual reproduction in higher plants and with related phenomena in animals and related plants; a presentation of cytology and embryology of apomicts and the diversified terminology in the field; views on the genetic background of apomixis and environmental effects on its expression; and the interrelation between apomixis and other traits. Additional topics covered include classical and modern theories of sexual versus asexual reproduction; geographical and taxonomical trends in apomicts; ecological implications of apomixis, and a review of future possibilities for using apomixis in plant breeding. Apomixis in Plants is an important reference volume for researchers and students in all areas of botany, ecology, and plant breeding.
Species
DOWNLOAD
Author : John S. Wilkins
language : en
Publisher: Univ of California Press
Release Date : 2009
Species written by John S. Wilkins and has been published by Univ of California Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Nature categories.
In this comprehensive work, John S. Wilkins traces the history of the idea of "species" from antiquity to today, providing a new perspective on the relationship between philosophical and biological approaches.--[book cover].