Final answer:
Protein is the macromolecule involved in how hemophilia is passed from parents to their children.
Step-by-step explanation:
The macromolecule involved in how hemophilia is passed from parents to their children is
protein. Hemophilia is caused by a mutation in the genes responsible for producing certain blood clotting proteins. Since genes are made of DNA, which is a type of nucleic acid, a mutation in the gene can lead to an abnormal protein that affects blood clotting. This abnormal protein or the absence of a necessary clotting protein can cause the uncontrollable bleeding characteristic of hemophilia.
Learn more about Hemophilia inheritance