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.
Every December I reread A Christmas Carol by Charles Dickens. Ebenezer Scrooge's nephew Fred is the character young people most easily relate to. He is young himself, carefree, in love and enjoying life with his friends. He has a traveler personality.