The term "Caucasian phenotype" refers to a set of physical characteristics commonly associated with people of European descent. These traits may include lighter skin tones, straight or wavy hair, and a variety of eye colors, such as blue, green, or brown. The phenotype is influenced by genetic factors and can vary widely among individuals within this group. Historically, the concept of the Caucasian phenotype emerged from the classification of human races in the 18th and 19th centuries. It is often linked to the Caucasus region, which is situated between Europe and Asia. However, modern genetics shows that human variation is complex and cannot be strictly categorized into distinct racial groups.