The most commonly occurring mutation in people with cystic fibrosis is a deletion of a single codon. what is the result of this type of mutation?

A buildup of sticky mucus on the outside of the cell  

Explanation:

The deletion of the codon means that the protein the gene codes for is missing one amino acid.

That protein acts as a Cl⁻ channel in the cellular membrane and controls the movement of water in the tissues.

The water produces thin, freely flowing mucus. Without the water, a coating of thick mucus builds up on the outside of the cell.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

the answer is d p: cell, q: organ, r: organ system, s: tissue