A Child Is Diagnosed with DiGeorge Syndrome Due to a 22q11.2.1

question 4

Multiple Choice

A child is diagnosed with DiGeorge syndrome due to a 22q11.2.1 deletion encompassing approximately 30 to 40 genes.Researchers have genetically inactivated these genes in mice to identify which are essential for pharyngeal arch development.Which two genes in the deleted area are now thought to be the key players in DiGeorge syndrome?

• A) PAX9 and PAX1
• B) TBX1 and CRKl
• C) ENDOTHELIN 1 and FGF10
• D) DLX5 and -6

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