The substitution of one base for another base in DNA can have what effects on the phenotype? Why would you expect additions and deletions of bases to have a major effect on the phenotype?

answer; /// i believe the correct answer is (thrombocytopenia); (a)

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."