ABSTRACT
Individualized medicine offers a new way to separate the mechanical body from the patient who inhabits it. The expectation is that genetics will identify the inherited propensities of each person to maintain his or her health or to acquire certain diseases. Modern thinking about genetics properly began with Charles Darwin's theory of evolution, which is centered on the idea of natural selection. Darwin gathered and observed many species in his voyages and struggled to understand how they came to be differentiated. He concluded that the genetic structure of a living thing occasionally can change or mutate. The development of modern genetics at first helped us to better understand genetic information about some individual organisms. The notorious Josef Mengele performed many twin experiments, which are used to examine the similarities and differences between people with identical genetic structures.
