Explanation:
First off, is MD dominant or recessive? Do you need one copy of the gene to get it or two? Based off the info provided you need one copy of the gene to get it meaning it's a dominant trait.
Start here with what I drew. If Audras mom has siblings with no MD, that means that one of Audra's grandparents has to have no MD Gene's and her other parent has to have 1 MD gene and 1 no MD gene inherited.
It's likely Audras grandpa's last square to fill in is No MD, but that's not necessarily true.
