Height is a quantitative trait, meaning that genes at several loci contribute to the phenotype. Does this mean that any two individuals in a population that differ in height also differ in the alleles they carry?

Quantitative Trait

A phenotype that can be measured and is influenced by the combined effects of multiple genes and environmental factors.

Phenotype

The set of observable characteristics or traits of an organism, resulting from the interaction of its genotype with the environment.