If the map distance between genes a and b is 10 map units and the map distance between genes b and c is 25 map units, what is the map distance between genes a and c?

Prior knowledge can be gained from personal experience and a) forming well-developed hypotheses. b) listening to opinions of other people on a topic. c) researching previous experiments and results on a topic. eliminate d) no other methods. it can only be gained by personal experience.