STR
STR stands for short tandem repeat, which is a type of DNA marker. As its name implies, an STR is a short sequence of DNA that is repeated multiple times in succession.
The length of a person’s STRs and the number of times they are repeated distinguish that person from others in the population. This biological fact is what makes STRs useful for human identification purposes.
Because humans inherit one-half of their DNA from each biological parent, the DNA profile of a child can be compared with the profile of an alleged parent to determine whether the two individuals are biologically related. STRs are inherited in predictable ways, so they can be examined to determine if one person is the biological offspring of another.
Beta Paternity examines a minimum of 16 STRs in its paternity tests. If unexpected results occur because of genetic mutations or other unusual circumstances, we can perform extended testing to ensure our results are completely accurate.
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