A homologous chromosome pair is best described as two chromosomes having.

the same genes in the same order but possibly with different alleles of some of the genes

Explanation:

Homologs are same genes in same order. So each loci in a chromosome (location of a gene) will have same gene, but those genes might be different allele. One of the homologous chromosome could have "A" allele and other could have "a" allele but both would be for same gene.