If the gfr is too low, needed substances may pass so quickly through the renal tubules that they are not absorbed and instead are lost in urine. a. true b. false

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."

preservation because he preserves part of the land and preserves means save

explanation: