People Who Suffer FromMarfan Syndrome Have Disproportionately Long Limbs, a Weakened

Multiple Choice

People who suffer fromMarfan syndrome have disproportionately long limbs, a weakened aorta, and poor eyesight. All of these characteristics are due to the production of abnormal connective tissue, resulting from a single defective gene. Marfan syndrome is an example of

A) pleiotropy.
B) polygenic inheritance.
C) multiple allelism.
D) epistasis.
E) codominance.