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15. | Which of the following double-stranded DNA molecules would denature at a lower temperature than the 40 base-pair double-stranded molecule described above? | |
A. | a 40 base-pair molecule in which 25% of the bases are adenines | |
B. | a 30 base-pair molecule in which 40% of the bases are guanines | |
C. | a 20 base-pair molecule in which 10% of the bases are thymines | |
D. | a 10 base-pair molecule in which 20 % of the bases are cytosines | |