Acell shows formation of a contractile ring just prior to cytoplasmic division. which cell is being observed?

a. onion root tip cell

b. leaf cell

c. human fetal cell

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."