The pedigree traces red-green color blindness. Lisa and Monica are half-filled circles. Sam, Bella, Joshua, and Tim are filled-in shapes.

Which family members have red-green color blindness?

The correct answer is - Tim, Sam, Bella, and Joshua.

Explanation:

The human pedigree shows the particular trait in which is inherited in a family across different generations. In such pedigree, there are some signs that are used to express such as blank shapes represents normal individual, half-filled shapes represents a carrier individuals, and complete or fully filled shapes represent the affected individuals.

Lisa and Monica are half-filled circles which means they are carriers for the disease. Sam, Tim, Bella, and Joshua have filled-in shapes in the illustrated pedigree. Which means they are affected by the disease.