Answer:
The immune system protects the host from pathogenic organisms (bacteria, viruses, fungi, parasites). To deal with this array of threats, the immune system has evolved to include a myriad of specialised cell types, communicating molecules and functional responses.
Explanation:
Hereditary diseases and cancer are ways in which inherited factors can affect a persons health
Deoxyribonucleic acid (DNA) - polymers of nucleic acids