In two situations, boys in unrelated families happened to share the same mutation. (sciencedaily.com)
Altogether, the team found TEK mutations in 10 unrelated families with children who have primary congenital glaucoma. (sciencedaily.com)
As generally institutionalized, marriage bonds a man and a woman from unrelated families in order to provide the genetic diversity and lengthy nurture needed by their anticipated offspring. (religion-online.org)