In twenty articles, scientists from around the world deal with various aspects of repetitive sequences in chromosomes, telomeric sequences and their maintenance by telomerase, chromatin structure and gene activation, centromeric complexity in holocentric chromosomes, translocation frequencies in X and Y chromosomes and evolution of DNA repair mechanism. Four of the articles deal with cytogenetics of certain groups of animals, viz. lepidoptera, fish and birds. Also contains an article on chromosomal radiosensitivity as an indicator of genetic predisposition to breast cancer. The molecular genetics of various cancers, viz. gastrointestinal, lung, prostate and bladder have also been discussed.

Aspects of Tandemly Organized, Repetitive Sequences in Chromosomal DNA / Mapping and Organization of Highly-Repeated Sequences by Means of Fluorescence in situ Hybridization Against Synaptonemal Complex-Associated Chromatin of Rye /Some Insights on the Mechanism of in situ DNA Digestion by Restriction Enzymes and on Fluorochrome Banding: the Case of the Argentata group. / Structural Differences of Chromosomes in Plants Detected by Fluorescence in situ Hybridization Using Probes of rDNA, Arabidopsis-type Telomere Sequence Repeats and pCrT7 / Planococcus citri (Homoptera, Coccoidea): a Paradigmatic Case of Chromosome Structure as an Epigenetic Way to Control Gene Expression / Cytogenetic and Molecular Analysis of Heterochromatic Areas in the Holocentric Chromosomes of Different Aphid Species / Translocation Frequencies for X and Y Chromosomes Predicted by ComputerSimulations of Nuclear Structure / Evolution of DNA Repair Mechanisms / Cytogenetics of Lepidopteran Insects / A Review of Chromosome Banding in Fishes/ Chromosomes in Birds / .Chromosomal Analysis in Human Population Monitoring / Genotoxic Investigations On Occupationally Exposed Cattle Yard Workers / Telomeres, Telomerase and Cancer / Chromosomal Radiosensitivity as an Indicator of Genetic Predisposition to Breast Cancer / Molecular Genetics of Gastrointestinal Tract Cancers / Molecular Pathogenesis of Lung Cancer / Bladder Cancer: Genetic Epidemiological Factors Involved in its Genesis / Molecular Genetics of Prostate Cancer

Postgraduate and Doctoral students, Researchers.