In many techniques of genetic engineering, a gene from one species is transferred to another species. When the techniques succeed, the gene is functional in its new genome. Which are the properties, shared by all or nearly all species, that allow these techniques to be successful? Select all of the answers that apply.
A. a common use of RNA for carrying genetic information
B. a common molecular structure of the DNA molecule
C. a common genetic code for translating genetic information into proteins
D. a common set of locations of genes on the DNA molecule