The observable physical or biochemical characteristics of an organism
Protein expression is observable you putz.
Run along and look up western blotting in your little book.
Unlike evolutionists scientists
All scientists, save for a handful of crackpots, are evolutionists.
Get a clue.
The observable physical or biochemical characteristics of an organism
Scientists (and that does not include confusionist evolutionists) speak of changes in phenotype as changes in the structure of the organism. When they talk about protein expression they protein expression. Science does not play fast and loose with words as evolutionists do.