denatured at 95°C for 5 min and separated by electrophoresis on 6% denaturing polyacrylamide
sequencing gels (6% polyacrylamide 29:1, 7 M urea) in 1X TBE buffer. The gel was pre-run at 300
V for about 30 min before 10 μL of the mixture was loaded. Gel was run at 400 V for about 2 h, and
stained with silver nitrate using the modification method from Benboza et al. (2006).