variation in phenotypes

Phenotypic variation refers to the differences in observable traits among individuals, such as height, eye color, or blood type. These differences arise because of genetic makeup—genes inherited from parents—and environmental factors like nutrition or climate. Even people with similar genes can look or behave differently due to environmental influences, while genetic differences can lead to distinct traits. This variation is important for evolution and adaptation, allowing populations to survive and thrive in changing environments. Overall, phenotypic variation results from a complex interplay between genetics and the environment, producing the diversity of traits seen in all living organisms.