Final answer:
Yellow jaundice occurs when the body builds up excess bilirubin.
Step-by-step explanation:
Yellow jaundice occurs when the body builds up excess bilirubin. Bilirubin is a bile pigment that is formed from the breakdown of hemoglobin in red blood cells. When the concentration of bilirubin in the blood exceeds 2 mg/100 ml, it starts to diffuse into the tissues, resulting in yellow coloration, also known as jaundice.