Peristalsis is characteristic of skeletal muscle involving a contraction and relaxation of opposing layers of smooth muscle cells.

(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."

energy and particles

i believe the answer would be b. hope it : )