Автор: Brinkman Название: Morphology and Evolution of Turtles ISBN: 9400743084 ISBN-13(EAN): 9789400743083 Издательство: Springer Рейтинг: Цена: 13969.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Moreover it includes reports on important but poorly understood fossil turtle assemblages, provides historical perspectives on turtle research, and documents disease and variation in turtles.
Annelida, mainly consisting of marine Polychaeta and in faunal and partly parasitic Clitellata, is one the most significant metazoan taxa. Its more than 20.000 described species invade nearly all habitats and play a central role in marine benthic systems as well as in terrestrial soil communities. Annelids include all soft-bodied segmented worm-like organisms and have been recognized as a separate "phylum" for almost 200 years.
Recently, evidence has been accumulated which shows that some of the groups formerly regarded as independent "phyla" such as Pogonophora (now recognized as Siboglinidae), Echiura, Myzostomida and perhaps Sipuncula, are most probably nothing else than greatly modified Annelida. The extreme morphological diversity found especially in Polychaeta displays the plasticity of a simple segmented organisation that basically is nothing else but a serial repetition of identical units. Thus, annelids are highly important to our understanding of fundamental questions about morphological and adaptive diversity, as well as clarifying evolutionary changes and phylogenetic relationships.
The book aims to summarize our knowledge on Polychaetes polychaetes and their allies and gives an overview of recent advances gained by studies that employed conventional and modern methods plus, increasingly and importantly, the use of molecular markers and computer-assisted kinship analyses. It also reflects the state of art in polychaete sciences and presents new questions and controversies. As such it will significantly influence the direction of research on Polychaeta and their related taxa.
Автор: Dubnau Название: Behavioral Genetics of the Fly ( Drosophila Melanogaster ) ISBN: 1107009030 ISBN-13(EAN): 9781107009035 Издательство: Cambridge Academ Рейтинг: Цена: 17899.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The common fruit fly - Drosophila melanogaster - has been the subject of genetics research since the early twentieth century. The complete genomic sequence of Drosophila was published in 2000 and it is still the model organism par excellence for the experimental study of biological phenomena and processes. It is also by far the best model for studying gene function in mammals, including humans. Presenting state-of-the-art studies on the behaviour of Drosophila, this volume discusses normal and pathological models of neurobehavioral disorders and encompasses the specialised methods that have been used, from anatomical, histological, immunohistological and neurophysiological to genomic, genetic and behavioural assays. A comprehensive and thorough reference, this volume is a valuable resource for students and researchers alike across several disciplines of life sciences, including behavioral genetics, neurogenetics, behavioral neuroscience, molecular biology, evolutionary biology and population biology.
Автор: Shapiro Название: Disordered Vertebral and Rib Morphology in Pudgy Mice ISBN: 3319431498 ISBN-13(EAN): 9783319431499 Издательство: Springer Рейтинг: Цена: 15372.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: ?This book presents results obtained from the whole mount preparations, radiological, and histological studies of 60 pu/pu and pu/+ mice from late embryo until 3 months of age. Most mice were in the embryo to 6 week age group where vertebral developmental changes are most marked. Although vertebral abnormalities have been identified as due to mutations in the delta-like 3 (Dll3) gene, it is evident that each mouse has differing structural abnormalities. The disorder is analogous to human congenital scoliosis, a common variant of which is spondylocostal dysplasia. The histological studies presented in this book include plastic embedded sections which allow for high level resolution not only of vertebrae, intervertebral discs, and ribs but also of associated spinal cord, nerve roots and ganglia. In addition an overview of embryo and neonatal development in mouse, chick and human vertebrae is provided to better assess how and where deviant pathoanatomy occurs. The book discusses the possible variables involved in creating final deformity beyond the gene abnormality itself.
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