A couple with the ability to taste PTC have two grown sons and one grown daughter. The sons have the ability to taste PTC. Their daughter is a PTC non-taster. She married a PTC non-taster man, and they have two sons.

16. Construct a pedigree in the box below that fully represents the above scenario and tracks the inability to taste PTC (non-taster), which is caused by two recessive “t” alleles. In your pedigree, please make sure that:

-The correct shapes for males and females are used.
-The shapes that require shading are shaded.
-The genotypes are listed next to each pedigree shape.