What term refers to the physical location of genes on chromosomes?

The term that describes the physical location of genes on chromosomes is "gene locus." A gene locus refers specifically to the position of a gene on a chromosome, which can help in identifying which particular genes are associated with certain traits or conditions. It is a crucial concept in genetics as it provides a framework for understanding how genes are organized and how they can affect phenotypic expression.

In contrast, a gene pool refers to the complete set of genetic information present in a population, not the specific location of individual genes. Allele frequency is a concept related to the proportion of different alleles in a population, which is useful for studying genetic variation rather than mapping the position of genes. A gene cluster typically refers to a group of two or more related genes that are located together on a chromosome but does not specifically address the definition of physical location of an individual gene as clearly as gene locus does.