Explore BrainMass
Share

Explore BrainMass

    Crime and DNA testing

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Crimes and DNA
    In an incident where a man rapes a woman and get away without being identified, police ask local men to submit a DNA sample (by of which is then placed in the Nat'l Database). Most men in the town voluntarily submit a sample, and none of them matched the sample collected at the crime scene, but a partial match was found. Authorities then looked at immediate relatives of the close match and identified a suspect.

    -What is the fundamental science of this scenario?

    - What practices may have been used to conduct this investigation?

    -What genetics may have triggered this close call of a match; how would this examination be different from a direct identification.

    -What is some societal implication of the way the investigation was conducted? (Negative and positive factors)

    © BrainMass Inc. brainmass.com April 1, 2020, 4:40 pm ad1c9bdddf
    https://brainmass.com/biology/bioinformatics/crime-and-dna-testing-258646

    Attachments

    Solution Preview

    In an incident where a man rapes a woman and get away without being identified, police ask local men to submit a DNA sample (by of which is then placed in the Nat'l Database). Most men in the town voluntarily submit a sample, and none of them matched the sample collected at the crime scene, but a partial match was found. Authorities then looked at immediate relatives of the close match and identified a suspect.

    -What is the fundamental science of this scenario?
    Identification of suspects based on genetic testing is based on identifying a series of rare genetic elements. In some cases this is a particular pattern formed by restriction enzyme fragments (RFLPs), variable lengths of repetitive DNA (variable length polymorphisms), or a single nucleotide differences (single nucleotide polymorphisms). Whatever the DNA identifier it has to be rare enough to preclude matches due to random chance. The crime DNA sample can then ...

    Solution Summary

    Several paragraphs with web references.

    $2.19