Question: In 1931, Barbara McClintock discovered that genes could change position on a chromosome. In corn plants, if a certain gene was moved next to the gene that controls kernel color, the kernels in an ear of corn were various colors. Which statement best supports McClintock's discovery?

  Options: 
 A. Genes control inherited traits in organisms.
 B. Corn plants can reproduce in laboratory environments.
 C. Chromosomes can move around in the nucleus of a cell.
 D. Genes are able to disappear and reappear in later generations.
Answer: A