Question

question 3 of 10
chargaffs team performed experiments to compare the relative amounts of nitrogenous bases in dna samples. which technique did they use to compare the amounts?
a. ultraviolet spectroscopy
b. genome sequencing
c. x - ray diffraction
d. radioactive labeling

Explanation:

Ultraviolet spectroscopy can detect and measure amounts of nitrogen - containing compounds like DNA bases due to their absorption of UV light. Genome sequencing determines the order of nucleotides, X - ray diffraction is for structure determination, and radioactive labeling is for tracking substances, not for simply comparing base amounts.

Answer:

A. Ultraviolet spectroscopy