Genes and DNA: The Code of Life

Genetic information encoded in DNA molecules determines not only human appearance and health, but also the functioning of all living systems. Understanding how this code works and how it is transmitted is essential not only for scientists, but also for specialists in medicine, biotechnology, and related fields. The course provides a systematic introduction to the fundamentals of genetics, from the structure of DNA to modern methods of editing it. The program covers key topics: the structure of the double helix, mechanisms of replication and repair, as well as the principles of transcription and translation. You will study Mendel’s laws and their application to inheritance of traits, including autosomal dominant and recessive types, and sex-linked inheritance. Separate modules address the chromosomal theory, mutations, and their impact on phenotype. The course also examines modern genome editing technologies such as CRISPR/Cas9 and their potential applications—from correcting inherited diseases to creating transgenic organisms. You will learn how DNA sequencing methods work and how to interpret basic genetic maps. The course methodology is built around visualizing complex processes: animations and diagrams help you understand the spatial organization of DNA, the stages of replication, and the mechanisms of enzyme action. Considerable attention is given to common errors in interpreting genetic diagrams—for example, confusing genotype and phenotype, or incorrectly applying Mendel’s laws to polygenic traits. You will learn to critically evaluate information about genetic tests and distinguish evidence-based data from speculation. The course is intended for students of biological and medical specialties, beginning researchers in molecular biology, biology teachers who want to update their knowledge, and practicing physicians who want a deeper understanding of the genetic aspects of diseases. The material will also be useful for developers of bioinformatics tools who need foundational knowledge about genome structure and function. Upon completion of the course, you will confidently use basic genetic terminology, be able to read and explain pedigrees, understand the principles of genome editing methods, and evaluate their limitations. You will develop the skill to analyze simple genetic problems and interpret results from standard genetic tests. These skills will provide a strong foundation for further study in genomics, evolutionary biology, or personalized medicine.