Alopecia+Areata-Genetics

The geno type of some one with alopecia areata is either Aa or AA. Here is a cross between two heterozygous parents. It occurs when there is a point mutation on certian genes on chromosomes 6, 10, 16, or 18.
 * =  ||= A ||= a ||
 * = A ||= AA ||= Aa ||
 * = a ||= Aa ||= aa ||

Link to Alopecia Areata Home page Link to Genetic Disorders List