Phenotypes

A phenotype is an observable trait of an organism, produced by the interaction of its genotype and environment. Phenotypes are the outward appearance of a living thing, such as hair and eye colour in humans, or size and shape in plants. They can also be physiological features and behaviours, like how fast a mouse can run. Studying phenotypes is a key way to understand the genetic makeup and biology of a species, and can be used to study the range of traits possible in a species, evolution, and development. Additionally, phenotypes can be used to develop treatments for genetic diseases, inform drug development, and provide insight into the effects of environmental factors on organisms.