If Lean Body Mass (LBM)and SNPs in the Gene for a G-Coupled

Multiple Choice

If lean body mass (LBM) and SNPs in the gene for a G-coupled receptor for a hormone secreted by the hypothalamus are associated,and the binding of this hormone is the first step in the release of thyroxin (necessary for skeletal muscle development) ,then increases in mutations in the hormone receptor gene would be expected to

A) increase LBM.
B) increase secretion by the hypothalamus.
C) decrease all thyroxin-mediated function.
D) increase body mass index (BMI) .
E) alter the QTLs involved.