Because Hydrogen Bonds Hold the Two Strands of a DNA

question 44

Essay

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, T_m (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 T_m to highest T_m).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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