Table 4. Formulas for calculating the copy number of each STR locus.

STR markers	Copy number (X)
AR	X = round [(S-191)/3]
Bat-25	X = round (S-379)
D5S346	X = round [(S-202)/2]
ER1	X = round [(S-359)/2]
ER2	X = round [(S-278)/2]
FGA	X = round [(S-200)/4]

Notes.

Abbreviations

X

the copy number of STR loci

S

the fragment length values of STR loci