Suppose That a Vertebrate Has a Mutation in the Transferrin

Suppose that a vertebrate has a mutation in the transferrin gene that makes the protein function less efficiently. Most likely, compared to individuals without the mutation, this individual would have _______ iron in its blood serum and _______ iron in the intercellular components of cells.

A) more; more
B) less; less
C) less; the same amount of
D) more; less