A person with hemophilia lacks the pleiotropic gene that codes for the protein called clotting factor VIII. This means that he or she will
A) have only the symptom of lack of blood clotting (bleeding).
B) always have the same symptoms as other hemophiliacs.
C) have many other symptoms in addition to excessive bleeding.
D) always have neurological problems.

Question

Quizplus · Accepted Answer

Pleiotropic genes affect multiple traits, so lacking the gene for clotting factor VIII can lead to various symptoms beyond just excessive bleeding.

A Person with Hemophilia Lacks the Pleiotropic Gene That Codes