Which of the following is used in medical imagery?
radio waves
X rays
blue light
ultraviolet light

then that particular organisms become extinct.

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."

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.