in the diagram, the shaded squares represent\na males with a heritable trait.\nb females with a heritable…

in the diagram, the shaded squares represent\na males with a heritable trait.\nb females with a heritable trait.\nc males without a heritable trait.\nd females without a heritable trait.
Answer
Brief Explanations:
In pedigree diagrams, squares represent males and shaded symbols typically indicate individuals with a particular trait. So shaded squares are males with a heritable trait.
Answer:
A. males with a heritable trait