Fibrocartilage often replaces hyaline cartilage when it is injured or damaged. what effect will this have on articular surfaces of bones? fibrocartilage often replaces hyaline cartilage when it is injured or damaged. what effect will this have on articular surfaces of bones?

it will make softener joints

Explanation:

Both cartilages have collagen, the main difference is that the fibrocartilage has a higher quantity of collagen, and the hyaline cartilage less quantity.

This characteristic makes that the fibrocartilage is the responsible to attach bones to other bones and provide restrictive to the movement of the joints. In the other hand, the hyaline cartilage facilitates the smooth and lubricates the joints of the bones.

So because they are complementary functions, it is neccesary to have both in joints, to have certain "softness" but at the same time so kind of "strongest" joints.

answer; genes dictate the production of specific enzymes, and affected individuals have genetic defects that cause them to lack certain enzymes;

pathogens is the answer