What is the term for alternate forms of a gene found at the same locus on a chromosome?

The term that describes alternate forms of a gene located at the same locus on a chromosome is "alleles." Alleles represent different variations of a gene that can result in different traits or characteristics. For example, a gene that determines flower color might have an allele for red flowers and another for white flowers. Since these variants occupy the same position (locus) on homologous chromosomes, they can influence the expression of a trait in an organism.

Genotypes refer to the genetic makeup of an organism, which can include multiple alleles. Phenotypes are the observable traits that result from the genotype, while genes are the basic units of heredity responsible for specific traits but do not specify the variations. Thus, the precise definition of alleles as alternate forms of a gene at the same locus makes this answer the most accurate.