Explain how two parents who do not have Morquio syndrome can give birth to a child who does have morquio syndrome.

Morquio syndrome is a rare inherited birth defect that occurs in one of every 200,000 births. Morquio syndrome is a genetic disorder, and it results from mutations of two specific genes: GALNS and GLB1. 2  Primarily, these are involved in the production of enzymes that digest larger sugar molecules called glycosaminoglycans (GAGs).

The grandparents may have had it..? Sorry it's not what you're looking for. Hope it helps tho

answer: my favorite subject is choir

explanation: it is choir becuase you can sing and have fun singing at the same time with your friends.