Digestion of
CO1
with the restriction enzyme,
SfcI
. Partial (A) and complete (B) digestion of the 500-bp
CO1
amplicon by the restriction enzyme,
SfcI
, was used to distinguish the Southwestern (SW) haplotype from the Central (C), Western (W), and Northwestern (NW) haplotypes based on digestion pattern.
SfcI
digestion at CTAC/TAG generates three fragments of 201-, 177-, and 122-bp for the Central, Western, and Northwestern haplotypes. In contrast,
SfcI
digestion generates only two fragments of 378- and 122-bp for the Southwestern haplotype; 500-bp undigested samples for each haplotype are loaded on the right side of the 2.2% agarose gel. Marker is a 100-bp ladder (Invitrogen).