Ascientist wants to examine a genetic disease in humans. the scientist hypothesizes that the disease can be treated by using gene therapy. humans take a long time to reproduce and develop, so the scientist will have to

develop new methods to test the hypothesis

hope this helps

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

your answer is "the 1950's"