The Y chromosome is one of the two sex chromosomes in humans; the other is the X chromosome. The sex chromosomes form one of the 23 pairs of human chromosomes in each cell. Each person normally has one pair of sex chromosomes in each cell. The Y chromosome is present in males, who have one X and one Y chromosome, while females have two X chromosomes.
All male children inherit their Y chromosome from their father. These children will in turn pass the Y chromosome inherited from their father to their kids when they become fathers. This pattern of inheritance means that males coming from the same paternal line will always share the same Y chromosome. This means that the Y chromosome of biological brothers, male cousins and paternal uncles will be identical.
How does Y chromosome testing work?
Y chromosome testing (also known as Y DNA testing or Y-STR testing) compares the Y chromosome profiles between individuals to confirm whether or not they share a common paternal line. The low mutation rate of the Y chromosome makes this Y chromosome test extremely reliable. In addition, AlphaBiolabs uses the latest 27 marker technology to ensure the accuracy of its genetic testing.
A full match between profiles confirms that the men share a paternal line. For example, male cousins could use the Y chromosome test to prove if their fathers were brothers or to check if they share a common grandfather or ancestor. If the males have different Y chromosome profiles then they do not share the same paternal line.
Although the Y chromosome is only found in males, females could ask a male, paternal biological relative, to take the test on their behalf. This would be useful in the case of proving relationships to paternal cousins, for example, as cousin DNA testing is not as conclusive.
Y chromosome testing starts from just $249 for results within 3–5 working days (from receipt of all samples in the lab). The test involves rubbing mouth swabs gently and painlessly on the inside of the cheek to collect buccal cells. No blood samples are needed for this DNA test. AlphaBiolabs offers a full range of DNA relationship testing, which you can order direct from our website. For further details on our Y chromosome testing, contact us via Live Chat or call now at 727-325-2902.