Certain congenital disabilities are polygenic in nature. Typically, the chance that a child will be born with a polygenic disability is small. However, once a child is born with a polygenic disability, the probability that future children from the same parents will be born with the same disability increases. Assume that the probability of a child being born with polygenic disability A is 0.001. If a couple has a child with this disability, then the probability that the same couple has another child with the same disability becomes 0.04.

Are the events of children being born, from the same parents, having the polygenic disability independent events?