Gel Electrophoresis & DNA Fingerprinting

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Presentation transcript:

Gel Electrophoresis & DNA Fingerprinting Essential Question: How is DNA fingerprinting used to establish genetic relatedness?

DNA Fingerprinting DNA fingerprinting technique is used to identify individuals. Also called DNA profiling. Gel Electrophoresis is the name of the process used to develop a DNA fingerprint

DNA Fingerprinting These gels are called "DNA fingerprints" because they are unique to every person--except identical twins Parents and offspring have similar DNA profiles but not completely the same. Blood relatives will have a higher degree of similarity of DNA profiles than any random individuals.

DNA Fingerprinting Practical Applications: Paternity Testing Children get half of their DNA from their mothers & half of their DNA from their fathers.

Is Male 1 or Male 2 the father of this child?

Which “Dad” is the father?

DNA Fingerprinting Practical Applications : Forensics (crime analysis) Profiles can be prepared from small amounts of blood, semen, hair, or skin cells Suspect whose profile matches the evidence is most likely the culprit

Which suspect committed the crime?