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aalyn [17]
3 years ago
13

A detective finds a miniscule spot of blood on a murder suspect’s shirt. What method would the police lab be expected to use to

get enough DNA from the blood droplet to perform DNA fingerprinting?
Biology
1 answer:
WARRIOR [948]3 years ago
4 0

Answer:

Polymerase chain reaction (PCR)

Explanation:

Polymerase chain reaction (PCR) is a method by which a target DNA fragment is amplified to produce millions of copies. In PCR, the Taq polymerase enzyme uses nucleotides and primers to replicate a small DNA segment <em>in vitro</em> and produces two DNA molecules. The newly formed DNA molecules are denatured by heating to facilitate their replication to produce four double-stranded DNA molecules. In this way, the number of DNA molecules is doubled in each cycle. Therefore, the small amount of DNA obtained from the minuscule spot of blood on a murder suspect’s shirt can be amplified using PCR.

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