They are <span>called </span><span>pathogens.</span>
Invasion and multiplication of pathogenic microorganisms<span> in the body is called an infection. When we are infected by </span>pathogens<span> we become sick, which means that our bodies stop functioning properly. Infectious agents, such as </span>bacteria<span>, a virus, fungi or protozoa cause communicable diseases.</span>
Identical genes have the same genetic material and the same genes. So if they both have a disease it's likely that it's genetic.
Preserving them will ensure that poachers will not hunt them and their habitat will not be destructed