Per general etiquette, the mother of the bride buys her wedding day outfit first, then notifies the mother of the groom about the color, length and overall formality of her choice. But if the groom's mom doesn't get word by the four-month mark, she should touch base with the bride-to-be about what to do.
Genetics. The two main types of hemophilia are caused by gene mutations that affect the levels of clotting factors in the blood. Mutation of the FVIII gene leads to hemophilia A, also called classic hemophilia, while a mutations in the FIX gene leads to hemophilia B, also called Christmas disease.
Most cases of hemophilia arise as an inherited disorder, which means that a person is born with hemophilia as determined by his genetic makeup. The condition is caused by a defect in one of the clotting factor genes that lies on the X chromosome. Hemophilia almost always occurs in males since the gene can be passed from mother to son, and a son lacks a second X chromosome to make up for the defective gene.