Figure 1.

The second position of codon 12 in K-ras2 of Panc-1 genomic DNA is heterozygous with roughly half the alleles being wildtype {G} and with the other half being mutant {A}. (A) All K-ras2 exon1 polonies are shown following Sybr Green I staining. (B) After the polonies were made single-stranded, a sequencing primer was hybridized to the polony and the position was shown to be heterozygous by performing independent single base extensions with Cy-5 labeled: dATP (blue) and dGTP (red). Extensions with Cy-5 labeled dCTP and dUTP did not yield any significant signal (data not shown). Colors are artificial in both images.

Butz et al. BMC Biotechnology 2003 3:11   doi:10.1186/1472-6750-3-11
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