Homologous chromosomes How are diploid cells, homologous chromosomes, and alleles related? Diploid cells have homologous pairs of chromosomes, which carry the same genes as one another but not necessarily the same alleles. Diploid cells have half of a homologous pair of chromosomes. Diploid cells therefore only have one allele for each gene. Diploid cells have homologous pairs of chromosomes. Diploid cells therefore might have up to four different alleles for each gene. Diploid cells have one set of non-homologous chromosomes, containing alleles inherited from two parents.
