Ab blood type is an example of a. polygenic inheritance b. independent assortment c. codominance d. incomplete dominance

I think the correct answer would be option C. AB blood type is an example of codominance. It is a type of dominance where alleles of a pair are fully expressed. This would result to a product that is neither recessive not dominant and an AB blood type is a perfect example.

To kill bacteria from our body especially from stomach

Active site is where they touch.