Ultrasonic attenuation at 10MHz is measured for three poly(methacrylate esters) and polypropylene, and the attenuation peak due to motion of the α-methyl group is ...
Both uracil and thymine pair with adenine, but they differ in their chemical structure. Thymine has an additional methyl group (-CH3) attached to its pyrimidine ring, while uracil lacks this group.
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