Which best describes a gene? O A. A tetrad
O B. A piece of a chromosome
O C. A sister chromatid
O D. A chromosome

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."

they both go up but then go back down. they both end lower than they started. lastly, they both are competitive/the second on.

explanation:

a- multicellular

b-eukaryotic

c-no cell wall

d-heterotrophic

e-autotrophic

whats the answer to your question?