The electronic course is intended for studying the discipline by students of the specialty "Psychology". The course examines the anatomical and physiological features of the organism in different periods of ontogenesis; mechanisms of adaptation of the organism to environmental changes; cytological and biochemical bases of human heredity; patterns of inheritance of signs; the influence of mutagenic factors on human heredity.

Key words: physiological system, functional system, ontogenesis, genetics, heredity, variability, hereditary diseases.