Which of the following is not t true regarding the denaturation and reannealing of double stranded dna molecules?
-decreasing the salt concentration of the solution lowers dnas melting point
-increasing the gc content of dna raises its melting point
-single stranded dnas can only anneal to one another if they are 100% identical in nucleotide sequence
-dna is more likely to denature when exposed to a higher ph
-melting point is the temperature at which the dna is on half double stranded and one half single stranded.