<<Disclaimer: Verify this information before applying it to your situation.>> In order to test positive for Celiac Disease DNA and to have Celiac Disease, does a person have to have 2 biological parents with CD DNA or is CD DNA a dominant inherited trait that only requires 1 parent to carry the DNA? Thank you, in advance, for your kind response(s). Lynda **************Vote for your city's best dining and nightlife. City's Best 2008. (http://citysbest.aol.com?ncid=aolacg00050000000102) *Support summarization of posts, reply to the SENDER not the CELIAC List* Archives are at: Http://Listserv.icors.org/SCRIPTS/WA-ICORS.EXE?LIST=CELIAC