The DNA Avuncular, Grandparentage, Siblingship, Twin Zygosity or Y-STR Testing panel of tests determine kinship between people. They include the following: An avuncular test that requires 1 alleged aunt or uncle and the child. A grand parentage test that requires 1 alleged grandparent and the child. A siblingship test that requires 2 siblings and 1 mother. Twin zygosity that determines if twins are identical or fraternal. A Y-STR test that compares 2 males to determine if a common paternal lineage is shared. A Y-STR Test will include an additional charge for autosomal relationship testing.
