With any major scientific discovery, the previous work of many different scientists helps contribute to final conclusions . Which of the following scientists' work did not contribute to the discovery of the structure of the DNA molecule?

What is genetic variation? -(a) each individual in a population has slightly different genes. -(b) some individuals in a population have more genes than others. -(c) each population of a species has slightly different genes. -(d)some populations of a species have more genes than others.