Man is a special subject of genetic research. The main method of genetics is not applicable to it – hybridological. The small, and sometimes a single offspring makes it difficult to use statistical methods within the same family. Longer life expectancy, comparable with the life of the researcher himself, and the late stages of puberty are also limiting factors for using classical genetic methods. In this regard, at present, special methods are used to study the human genetic characteristics. There are four main methods of human genetics: cytogenetic, twin, genealogical and population-statistical. Along with them, other methods are used, based primarily on modern achievements in biochemistry and molecular biology.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.