38.
A:
A change in the optical rotator dispersion (ORD) of a DNA solution upon heating.
B:
A maximum rate of denaturation versus temperature for duplex DNA.
C:
An increase in the absorbance of light at 260 mm when DNA-RNA hybrids are annealed
D:
An increase in the absorbance of light at 260 mm upon denaturation of DNA.
The answer is: D