Final answer:
The locus of a gene is indeed the same for every member of a particular species; this is because genes are located on homologous chromosomes that bear the same gene sequences and loci.
Step-by-step explanation:
The statement that the locus of a gene is the same for every member of a particular species is true. A locus is the specific, fixed position on a chromosome where a particular gene or genetic marker is located. Within a species, every chromosome pair consists of homologous chromosomes that have genes at the same locus, although different individuals may have different alleles, which are variations of those genes, at those loci. An example is seen in pea plants, where the gene for flower color has the same locus, but can have different alleles, such as the purple-flower allele (B) and the white-flower allele (b).
Homologous chromosomes, which are paired chromosomes with the same gene sequence, are key to this consistency in locus position. However, it's important to note that while the loci are consistent, the actual expression of the traits can vary based on these alleles. Moreover, sex-linked genes, which are found on sex chromosomes, and linked genes, which are located close together on the same chromosome, exhibit patterns of inheritance that are influenced by their respective chromosome's behaviors during meiosis.