An inducer is a molecule that can remove the repressor from the gene. What effect would this have on gene expression?

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).