معنی کلمه adapting of genes

The genetic theory of adaptation was propounded in 1900.

What is gene adaptation?
Definition: A biological characteristic with a heritable basis that improves reproduction and/or survival and results from evolution by natural selection.

Genetic adaptations have occurred in many aspects of human life, including the adaptation to cold climate and high-altitude hypoxia, the improved ability of defending infectious diseases, and the polished strategy of utilizing new diet with the advent of agriculture.