Everyone has the HD gene, but in some families an abnormal copy of the gene gets passed from parent to child. If you have a parent with Huntington's disease, you have a 50% chance of having the gene and developing the disease. Also: Men and women are equally likely to inherit the abnormal gene.
Hydrogen gas is produced: Zn + 2HCl â ZnCl2 + H2â + Î´Q   Zinc (Zn) reacts with Hydrochloric Acid (HCl) to produce Zinc Chloride (ZnCl2), Hydrogen Gas (H2), and He â¦ at. 6 people found this useful.
Do not expose sodium metal to water! The reaction of sodium and water produces hydrogen gas and heat, which is not a good combination! Sodium must be stored under mineral oil, or some other high-molecular weight hydrocarbon. Chlorine gas is toxic, and extremely irritating to the eyes and mucous membranes. This reaction evolves a great deal of heat energy; make sure that the flask has no cracks in it.