Question

The basis of DNA fingerprinting is:

• A. Availability of cloned deoxyribonucleic acid
• B. Knowledge of human karyotype
• C. Phenotypic difference between individuals
• D. Occurrence of restriction fragment length polymorphism

Answer 1

The correct option is D Occurrence of restriction fragment length polymorphism

Restriction Fragment Length polymorphism (RFLP) is the basis of DNA fingerprinting. Restriction fragment length polymorphism (RFLP) is a type of polymorphism that results from variation in the DNA sequence recognized by restriction enzymes. These restriction enzymes are bacterial enzymes used by scientists to cut DNA molecules at known locations. RFLPs are used as markers on genetic maps.