The resistance of a conductor is proportional to its length. suppose that the lengths of the two samples were doubled. how would this affect their electrical resistance at 20 k?

a.) the resistance of both material a and material b would increase.
b.) the resistance of both material a and material b would not change.
c.) the resistance of material b would increase, but the resistance of material a would not change.
d.) the resistance of material a would increase, but the resistance of material b would not change.

The resistance of both material A and material B would not change.

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explanation:

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'