Abstract
We detected a unique new pattern of amylase isonezyme is the urine of 6,708 Mongolians of ethnic Chinese descent. Four isozyme bands appeared on the electrophoretic gel, including a slow-moving variant of Amylase-1s and a dominant Amylase-2.We named this pattern “mixed type”. Pedigree study revealed that father has dominant Amylase-2 and mother Amylase-1s both traits being autosomal dominant. Typically, children of such a couple have equal chances of getting the five possible phenotypes (normal, dominant Amylase-2, Amylase-1s, and mixed) This is analagous to ABO blood type co-dominant inheritance.
