Why are antibodies specific in function?

I like to think of antibodies as a lock and key, there is a specific key needed for each locks. Antibodies recognize foreign invading microorganisms by specifically binding to a pathogen's antigens and neutralizing them.

Explanation:

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

due to the fact that it skipped a generation we can tell it is definitely not a dominant trait, therefore it must be recessive. i think this is right let me know!

explanation: