Genetics: The scientific study of heredity. Genetics pertains to humans and all other organisms. So, for example, there is human genetics, mouse genetics, fruit fly genetics, etc.

Human genetics today comprises a number of overlapping fields, including:

Classical or formal genetics -- the study of the transmission of single genes within families and the analysis of more complex types of inheritance.
Clinical genetics -- the diagnosis, prognosis and, in some cases, the treatment of genetic diseases.
REF: https://www.medicinenet.com/genetics/definition.htm