The breast muscle of a wild duck is dark,while that of a domesticated chicken is white.What would be true of breast muscle in a wild duck?

Question

Quizplus · Accepted Answer

The dark color of the breast muscle in a wild duck is due to the presence of myoglobin, a molecule that stores oxygen in muscles. Myoglobin is found in higher amounts in slow-twitch muscles, which are used for endurance activities such as flying. Therefore, the breast muscle of a wild duck is predominately slow-twitch, with abundant capillaries and mitochondria to support oxygen supply and energy production during flight.

The Breast Muscle of a Wild Duck Is Dark,while That