We determine whether or not two brothers descend from the same paternal lineage.
23 markers on the male sex chromosome Y are analysed.
The average frequency of the genotype in the investigated population group will be indicated.
We determinewhether or not two sisters descend from the same father or not, in other words:
whether or not they are two alleged half sisters paternally.
In case they have the same mother, the mother must also be tested to determine if they are full sisters or half sisters.
12 markers on the sex chromosome X are analysed and the individual probability is calculated.