2) what portion of the cell is absent in rhizopus stolonifer with the exception of the reproductive cells?

Septa and the internal crosswalls.

Explanation:

Rhizopus stolonifer, also known as the black bread mold, is a fungus in the Mucoraceae family that causes soft rot in plants and fruits. This fungus is widely distributed worldwide and can often be viewed on bread and lemon surfaces. Unlike most fungi, Rhizopus stolonifer's cells lack the septa and the internal crosswalls.

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."