Adaptations to environmental stresses in Indian drosophilds

The geographical distribution of plants and animals is mainly determined by climatic factors, and by the capacity of species to adapt to their environment and to tolerate extreme conditions. In this book A major emphasis has been laid: a) on investigating species and populations at different growth temperatures; b) by employing isofemale lines c) by comparing wild and laboratory population in terms of coefficient of variation as well as variance for different traits; d) by calculating heritability on the basis of parent ¿ offspring regression which implies genetic basis of the phenotypic variations for various traits in different Drosophila species.