What is continuous variation?

Continuous variation refers to a situation in which a trait exhibits a full range of possibilities rather than limited categories. This means that the trait in question can take on many different values, often influenced by multiple genes and environmental factors. For example, traits such as height, skin color, and weight show continuous variation because they can vary widely within a population, rather than being restricted to one of two or a few distinct forms. This characteristic allows for a smooth gradation of traits, which is a crucial aspect of biological diversity.

In contrast, the other choices describe traits that do not align with the concept of continuous variation. Some traits have only two possibilities, indicating discrete variation, while others may suggest environmental determination or a lack of hereditary potential, neither of which describes the broad distribution seen in continuous variation.