Gene therapy has been used to treat and cure cystic fibrosis. Cystic fibrosis is caused by a in a single gene.

Which of the following is true about the products formed during photosynthesis? (5 points) select one: a. they have the same mass as the mass of reactants. b. they are the same set of compounds as the reactants. c. they have more mass than the mass of reactants. d. they are chemically the same as the reactants.