Which of the following best describes a trait controlled by more than one gene?

A trait controlled by more than one gene is referred to as a polygenic trait. Polygenic traits result from the cumulative effects of multiple genes, each contributing to the overall phenotype. This means that the expression of such traits is influenced by several different alleles across various genes, which leads to a continuous range of phenotypic variations.

For example, human height is a classic case of a polygenic trait; it is influenced by several genes, each adding to the height, leading to a spectrum of heights rather than distinct categories. This contrasts with a monogenic trait, which is determined by a single gene and typically exhibits simple Mendelian inheritance patterns.

Dominant and recessive traits are terms used to describe how alleles interact in determining traits, but they do not indicate the number of genes involved. Dominant traits are expressed in the phenotype even when only one copy of the gene is present, while recessive traits require two copies to be expressed. Thus, polygenic traits represent a broader and more complex interaction of multiple genes, making the answer appropriate for this question.