Multiply. -

question 355

Multiple Choice

Multiply.
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Definitions:

Dominant Trait

A genetic trait that is expressed in an organism even when only one copy of the gene responsible for the trait is present.

CFTR Gene

A gene that provides instructions for making a protein that acts as a channel for the movement of chloride ions across cell membranes, mutations of which can lead to cystic fibrosis.

Chloride Ions

Negatively charged ions (Cl-) that are typically found in extracellular fluid and play critical roles in the body's electrolyte balance.

Epithelial Cells

Cells that cover the surfaces of the body and its organs, serving as a protective barrier and involved in absorption and secretion.