to determine which of these two possibilities is correct , we hybridized chinese hamster fibroblasts with j558 mouse plasmacytoma cells that carry a reciprocal chromosome translocation between chromosomes 12 and 15 , and we examined the segregating hybrids for the presence of the normal and rearranged mouse c-myc genes , for the presence of different regions of the mouse heavy chain locus , and for the presence of genes located on mouse chromosomes 12 and 15 .
C0008633
chromosomes
C1708726
locus