Variation And Classification

"Our world is incredibly diverse, but why are living things so different, and how do we make sense of the vast range of life forms? This book tackles the issues of variation - how and why it occurs - and classification, looking at how we organize plants and animals into groups." --Publisher's description.

Explains how our animal classification system works and looks at how scientists use it to identify and group animal species, explores the variation between and within animal species and discusses how and why such variations have occurred.

The 'Life Science In Depth' series provides broad coverage of the Life Processes curriculum for Key Stage 3 science. Each title presents detailed information on the main concepts and theories of each subject area, as well as coverage of the most recent developments and possible advances in future research.

Explains how our plant classification system works and looks at how scientists use it to identify and group plant species. The book also examines the variation between and within plants species and discusses how and why such variations have occurred.

Granites (sensu lato) represent the dominant rock-type forming the upper–middle continental crust but their origin remains a matter of long-standing controversy. The granites may result from fractionation of mantle-derived basaltic magmas, or partial melting of different crustal protoliths at contrasting P–T conditions, either water-fluxed or fluid-absent. Consequently, many different mechanisms have been proposed to explain the compositional variability of granites ranging from whole igneous suites down to mineral scale. This book presents an overview of the state of the art, and envisages future avenues towards a better understanding of granite petrogenesis. Particular emphasis of this Volume is on the following topics: Compositional variability of granitic rocks generated in contrasting geodynamic settings during Proterozoic to Phanerozoic Periods, Main permissible mechanisms producing subduction-related granites, Crustal anatexis of different protoliths, and the role of water in granite petrogenesis, New theoretical and analytical tools available for modelling whole-rock geochemistry, in order to decipher the sources and evolution of granitic suites.

Find out how our classification system helps us make sense of the natural world. This book explains how our animal classification system works and how scientists use it to identify and group animal species. It explores evolution, mutation and the variation between and within animal species and discusses how and why such variations have occurred. Includes fieldwork investigations that show how to classify animals using various keys and fascinating fact boxes that offer in-depth information on topics such as breeding. An activity project shows students at Key Stage 3 how to classify the birds in their area. The six books in the Living Processes series look at the processes all living organisms must carry out in order to stay alive. From feeding and drinking through to breathing and reproducing, it explores the differing ways in which organisms carry them out.

This book is a compilation of various researches conducted by experts which focus on the genetic variation in animals. It discusses the scale of genetic variation present in animals. The genetic diversity exhibited by molecular markers gets extensive interest because of the utility of this information in breeding and conservation programs. In this theory, molecular markers give important data. The increasing availability of highly sophisticated molecular markers produces a detailed analysis and evaluation of genetic diversity in animals, and recognition of genes influencing reasonably significant qualities. The objective of the book is to offer a glance into the dynamic procedure of genetic variation in animals by presenting the opinion of experts who are engaged in the generation of new initiatives and techniques employed for the assessment of genetic diversity. The book should prove helpful for students and experts in the field of genetic protection.