People with one copy of an abnormal gene for a recessive trait (and who thus do not have the disorder) are called carriers. With codominant traits, both copies of a gene are expressed to some extent. An example of a codominant trait is blood type.
books.google.com-Robert Louis Stevenson originally wrote 'Dr. Jekyll And Mr Hyde' as a 'chilling shocker.' He then burned the draft and, upon his wife's advice, rewrote it as the darkly complex tale it is today.
In 1865, he wrote the short story, The Celebrated Jumping Frog of Calaveras County, which was very well received. He then began a career as a humorous travel writer and lecturer, publishing The Innocents Abroad in 1869, Roughing It in 1872, and, co-authored with Charles Dudley Warner, Gilded Age in 1873. His best-known works are The Adventures of Tom Sawyer (1876), Mississippi Writing: Life on the Mississippi (1883), and The Adventures of Huckleberry Finn (1884).