Bruce,

Good question so I looked it up on Wikipedia. The explanation is almost as clear as mud but gives hints as to what the meaning of gene expression is, sort of, almost.

I vaguely remember biology when I was in high school and naturally all that knowledge (what little there is) is so outdated as to be unusable.

Here is a link to Wikipedia.

https://en.wikipedia.org/wiki/Gene_expression

Larry ---sagefisher---