Both diseases are hereditary, but cystic fibrosis occurs as a result of a single gene that is mutated during the development of the fetus; Down syndrome happens when a fetus inherits an extra copy of the 21st chromosome.
cystic fibrosis occurs as a result of a single gene that is mutated during the development of the fetus; Down syndrome happens when a fetus inherits an extra copy of the 21st chromosome.
