X Chromosome Test

• To verify if two alleged half-sisters (different mothers) share the same biological father. The reason why they must have different, unrelated mothers is the way the X chromosome is inherited: if two women have one X chromosome in common, it would be impossible to know whether it comes from the father or from the mother's side.
  Note: If two alleged sisters with the same biological mother want to know if they share the same father, they will have to send the mother's sample in order to do the X Chromosome Test.
• Best option for a test between paternal grandmother and granddaughter.
• If you wish to know if two alleged sisters also have the same mother, or you are not sure if they have different mothers, you will require a Kinship Test.
• Accuracy of 99.9%.

How is the X chromosome inherited?

Men have one X chromosome and one Y chromosome, while women have two X chromosomes (and no Y chromosome). Men inherit their X chromosome from their mother. Women inherit one from the father and one from the mother. Therefore, the X Chromosome Test can be useful to verify different relationships, on both the paternal and the maternal side.

Test	Accuracy	Cost	Order
X Chromosome	99.9%	£199	Buy Now Recorded delivery Shipping included Order Kit for £19 Pay the remainder later

You have 2 purchase options:

• Pay for the complete test now and receive the kit by recorded delivery mail at no extra cost. The kit is sent with a tracking number and delivered upon signature.
• Pay only a £19 deposit (deductible from the test price), and receive the kit by normal post. Pay the remainder when you send in your samples.