Aperson constantly comes in contact with pathogens that can infect body cells and cause disease. which organ system is involved in protecting the body from both infectious and noninfectious diseases? a. muscular system b. nervous system c. immune system d. reproductive system

In 1994, telomerase activity was discovered in human cancer cell lines. although telomerase activity is rarely present in human somatic tissue, this discovery indicated that humans do contain the genes for telomerase proteins and telomerase rna. since inappropriate activation of telomerase may contribute to cancer, why do you think the genes coding for this enzyme have been maintained in the human genome throughout evolution?