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From start to finish, place in order the laboratory steps that must be accomplished in order to identify DNA from samples/organisms.

Question

From start to finish, place in order the laboratory steps that must be accomplished in order to identify DNA from samples/organisms.

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Solution

  1. Collection of Samples: The first step is to collect samples from the organism. This could be blood, saliva, hair, or any other biological material that contains cells.

  2. Extraction of DNA: The collected samples are then processed to extract the DNA. This involves breaking down the cells and separating the DNA from other cellular components.

  3. Purification of DNA: The extracted DNA is then purified. This step removes proteins and other impurities that could interfere with the identification process.

  4. Quantification of DNA: The purified DNA is then quantified. This step determines the amount of DNA present in the sample.

  5. Amplification of DNA: The DNA is then amplified using a process called Polymerase Chain Reaction (PCR). This step makes millions of copies of the DNA to ensure there is enough for analysis.

  6. Sequencing of DNA: The amplified DNA is then sequenced. This step determines the order of the bases in the DNA, which is unique to each individual.

  7. Analysis of DNA: The sequenced DNA is then analyzed. This step compares the DNA sequence to known sequences to identify the organism.

  8. Interpretation and Reporting: The results of the analysis are then interpreted and reported. This step involves making conclusions about the identity of the organism based on the DNA sequence.

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