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Siblings

Full siblings - same biological father and mother
Half siblings - same biological father, different biological mother OR different biological father, same biological mother
Twins - identical twins, fraternal twins


Brothers and sisters share most if not all of their parents. genes. The probability of blood relationships can be established by analyzing:
Autosomal genes - inherited in part from their parents and grandparents
 
Supplementary tests, only when needed
Y-chromosome haplotype - inherited along the paternal line vertically and horizontally, that include the father, paternal uncles and cousins, paternal grandfather, and paternal grand uncles and their off springs
Hypervariable regions of mitochondrial DNA - inherited from the maternal line vertically and horizontally, that include mother, maternal aunts and cousins, maternal grandmother, and maternal great aunts and their off springs
 
In view of the above, the analytical results can be strengthened by comparing the DNA profiles of other relatives.
 
Turn around time - after receiving the samples, 5กำ1 working days for personal use; 7กำ1 working days for legal use