Principles of Forensic DNA
for Officers of the Court
Principles of Forensic DNA for Officers of the Court
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Module 8 :: mtDNA & Y-STR

Topic 4 :: Y-STR Laboratory Analysis

The Y chromosome is found only in males and is inherited in a patrilineal fashion (i.e., from father to son). STR genetic markers present on this chromosome may be used to obtain the genetic profile of the male donor(s) in mixtures of body fluids from males and females.

Click here to view an animation demonstrating Y-STR inheritance.

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