IPA: /dʒəˈnɛtɪkəl/
KK: /dʒəˈnɛtɪkəl/
Relating to genes or heredity, which are the biological factors that determine traits and characteristics in living organisms.
The scientist studied the genetical factors that influence the development of certain diseases.
Genetical → It is formed from "genus" (from Latin, meaning kind or type) and the suffix "-ical" (meaning pertaining to). The word "genetical" refers to something that pertains to the kind or type of genes.
Think of 'genus' as referring to a kind or type, and remember that 'genetical' relates to the kind of genes.