The genetic code of humans can be found in DNA. Viruses, however, use RNA to code their genetic material. Which of the following statements identifies a difference between the genetic material of a virus and a human cell? 1) The genetic material of a virus contains thymine, whereas the genetic material of a human cell contains uracil. 2) The genetic material of a virus contains cytosine, whereas the genetic material of a human cell contains guanine. 3) The genetic material of a virus is a double helix, whereas the genetic material of a human cell is a single helix. 4) The genetic material of a virus is a single helix, whereas the genetic material of a human cell is a double helix. 1) The genetic material of a virus contains thymine, whereas the genetic material of a human cell contains uracil. 2) The genetic material of a virus contains cytosine, whereas the genetic material of a human cell contains guanine. 3) The genetic material of a virus is a double helix, whereas the genetic material of a human cell is a single helix. 4) The genetic material of a virus is a single helix, whereas the genetic material of a human cell is a double helix..