What is unique about the protein channels which allow
molecules to travel by
facilitated diffusion?

A. Each channel only allows one type of molecule to pass through it

B. The channels modify the molecule's DNA as they pass through

C. The channels move molecules very quickly

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the answer is :

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.'

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