Activity 1.1.5 DNA Evidence

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Florida International University *

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Biology

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Feb 20, 2024

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Activity 1.1.5 DNA Evidence Reflection Question 1 What are some possible sources of DNA from the scene where Anna Garcia’s body was found? Explain. Some possible sources of DNA from the scene where Anna Garcia's body was found could have been her hair (follicle attached), because the follow goal is the cell from which the hair grows. Her clothing, because even if they've been washed or bleached human cells can still be recovered from them Reflection Question 2 What are some challenges in extracting DNA from samples related to an active investigation? Some challenges and extracting DNA from samples is that everything must be very precise to prevent contamination of the final sample, or it may be the wrong sample Conclusion Questions 1. DNA has two strands. If the sequence of nucleotides of one strand was known, is it possible to use that information to determine the sequence of the second strand? Explain your reasoning for your response using an example DNA sequence. Yes, it's possible because you could translate one side of DNA to the other period you pair Adenine with Thymine and Cytosine with Guanine 2. Can you be framed by your own DNA? How might an individual’s own cells lead to false verdicts of guilt? In your explanation, provide one scenario in which this might occur. Yes, a sample of your DNA could have been taken without you realizing. For example, you're in a party with the individual that accused you of committing the crime. They could easily take a sample of your hair while dancing without you noticing
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