Fig. 1From: Cytogenetic screening of a Canadian swine breeding nucleus using a newly developed karyotyping method named oligo-bandingThe four components of the oligonucleotide structure. Twenty-mer (red) sequence complementary to the reverse primer sequence; 39mer (yellow) sequence bound to a denatured segment of chromosomal DNA (black); 20mer (purple) sequence complementary to the forward primer sequence; 20mer (orange) sequence to which the detection oligo (green, 20mer) binds during the second hybridization step. Thus, the fluorophore (blue) colours the specific segment of the chromosomal DNABack to article page