Highly Unusual Form of Inheritance Seen in Immune Disorder
PHILADELPHIA, PA (June 11, 2012)—The biological rule that people receive half of their genetic material from their fathers and half from their mothers does not always apply, it seems.
In the first such case on record, researchers at Fox Chase Cancer Center in Philadelphia have identified a child with a severe form of immune deficiency due to having received two copies of a disordered gene from his mother. Indeed, the child inherited two entire copies of the same chromosome, made up of thousands of genes, from his mother alone, with no contribution from his father.