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Because Hydrogen Bonds Hold the Two Strands of a DNA

Question 45

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Because hydrogen bonds hold the two strands of a DNA molecule together, the strands can be separated without breaking any covalent bonds.Every unique DNA molecule "melts" at a different temperature.In this context, Tm (melting temperature) is the point at which two strands separate, or become denatured.Order the DNA sequences listed below according to relative melting temperatures (from lowest Tm to highest Tm).Assume that they all begin as stable double-stranded DNA molecules.Explain your answer.
A.GGCGCACC
B.TATTGTCT
C.GACTCCTG
D.CTAACTGG

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