Course Contents

COURSE CONTENTS THEORY EVOLUTION: 1.The nature and origin to life. Evidences of evolution. (molecular, embryological & paleontological). Theories to explain the diversity of life – Modern synthetic theory. Factors initiating elementary evolutionary changes (micro-evolution) by changing gene frequencies, mutation pressure, selection pressure, immigration and crossbreeding, genetic drift. Role of isolation in evolution. 2. Factors of large evolutionary changes (macro/mega evolution) - allometry, orthogenesis, adaptive radiation. 3. Modern concept of Natural Selection: Levels of selection, selection patterns, laboratory and field example regarding action of Natural Selection. Action of Natural Selection leading to convergence, radiation, regression and extinction, Batesian mimicry, Mullerian mimicry. Sexual selection: Darwin’s concept, Fisher’s view, Zahavi’s handicap theory. Trend and rates in evolution. SYSTEMATIC ZOOLOGY: 1. Contribution of systematics to Biology: History of Taxonomy (Downward classification, upward classification, impact of the origin of species, population systematics, current trends); Microtaxonomy (brief account of various taxonomic categories i.e.,phenon, Taxon; Taxonomic categories).Brief account of species concepts (Typological concept; nominalistic concept, Biological concept, evolutionary concept, species mate recognition concept; non-dimensional species concept; Multidimenstional species concept; Cohesion species concept). Difficulties in the application of biological species concepts; polytypic species, subspecies, super species, sibling species. 2. Macrotaxonomy; Taxonomic collection and identification; definitions of Synonym, Homonym, Keys; Evolution of the theory of Nomenclature; interpretation and application of the code (stability, priority, first revisor principle) range of authority of code; concept of availability, type method formation of specific names. PRACTICALS 1. Study of preserved invertebrate species and their classification upto class level. 2. Collection, preservation and identification of common species with the help of keys. 3. Preparation of keys for the identification of specimens.

Course Synopsis

The course is specifically designed to provide in depth knowledge or origin of life, evidences for evolution and about forces responsible for evolutionary changes. The students will be taught basic rules and regulations about the identification and naming of organisms. The course will also impart in depth knowledge about speciation and the role of natural selection in the formation of species

Course Learning Outcomes

The course is designed to provide in depth knowledge or origin of life,and about forces responsible for evolutionary changes. The students will be taught basic rules and regulations about the identification and naming of organisms.