Hemophilia

A genetic disorder is an illness caused by mutations in genes or chromosomes by deletion and insertion. Abnormalities can range from a small mutation in a single gene to the addition or subtraction of an entire chromosome or set of chromosomes. A mutated gene is passed down through a family and each generation can inherit the gene that causes the disease.
Single gene disorders can be passed on through the generations in many ways and is affected by genomic imprinting and uniparental disomy.
Hemophilia-is group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation.
There is no cure for hemophilia, but it can be controlled with regular infusions of the deficient clotting factor
Deep internal bleeding, Joint damage, transfusion, adverse reactions, intracranial hemorrage
Stem cell research- stem cells are able to renew themselves through mitotic cell division and differentiating into a diverse range of specialized cell types.
It is controversial because the research involving the creation, usage and destruction of human embryos in a really big issue right now.
I think it should be legal if it saves a lot of people lifes and cures all of the diseases in the world.
Stem cells really could potentially fix hemophilia but only if they could make chromosomes.