Given that DNA sample A and B are of equal length, what can be said about the base compositions of the samples? Denaturation (%) 100 50 A B $t_M$ $t_M$ 0 75 80 85 Temperature (°C) The GC content of sample A is higher than that of sample B. The GC content of sample B is higher than that of sample A. The GC content of samples A and B are equivalent. There is not enough information to determine the base pair content.
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Step 1: The melting temperature ($T_m$) is the temperature at which 50% of the DNA strands are denatured. Show more…
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The “melting point” of a DNA molecule is the temperature at which the double-helical strand breaks apart. Suppose you are given two DNA samples. One sample contains 45 percent C-G base pairs while the other contains 64 percent C-G base pairs. The total number of bases is the same in each sample. Which of the two samples has a higher melting point? Why?
Umar Sohail Q.
The "melting point" of a DNA molecule is the temperature at which the double-helical strand breaks apart. Suppose you are given two DNA samples. One sample contains 45 percent C-G base pairs while the other contains 64 percent C-G base pairs. The total number of bases is the same in each sample. Which of the two samples has a higher melting point? Why?
The figure below shows the denaturation curves for three similar size of DNA samples, differing in their composition of bases. In the graph, which line indicates the most GC- rich DNA sample among the three and what is its melting temperature? Line A; and its melting temperature is 50°C. Line A; and its melting temperature is 75°C. Line A; and its melting temperature is 90°C. Line A; and its melting temperature is 100°C. Line C; and its melting temperature is 90°C. Line C; and its melting temperature is 108°C. Line C; and its melting temperature is 125°C.
Madhur L.
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