The correct definition of a molecular gene isn't difficult but getting it recognized and accepted is a different story.

When writing my book on junk DNA I realized that there was an issue with genes. The Average scientist, and consequently the average science writer, has a very confused picture of genes and the proper way to define them. The issue shouldn't be confusing for Sandwalk readers since we've covered that ground many times in the past. I think the best working definition of a gene is, "A gene is a DNA sequence that is transcribed to produce a functional product" [What Is a Gene?]