The Term "Double Muscling" Refers to

question 43

Multiple Choice

The term "double muscling" refers to

• A) mutations in the myostatin gene that lead to increased muscle mass in cattle.
• B) mutations in the CACNA1D gene involved in heart function that lead to increased muscle mass in mice.
• C) mutations in the gene for growth hormone that lead to increased muscle mass in dogs.
• D) mutations in a gene that lead to decreased muscle mass in cattle.
• E) all of these.