If a dna molecule is made up of 7% thymine what percent of it would be guanine

Guanine would be 43%

ALL 4 BASES MUST EQUAL 100

SO 7 THYMINE +7 ADENINE =14

100-14 T&A=86 OF GUANINE AND CYTOSINE

86 G&C ÷2= 43 OF GUANINE AND CYTOSINE

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."