Mutations in these genes result in abnormal or failed development of polarization in the Drosophila embryo. Nusslein-Volhard's experiments in 1979 identified and characterized all mutant alleles that affected the dorsal-ventral axis. Genes affecting dorsal-ventral polarization fall into two categories:
Biological warfare (BW)âalso known as germ warfare âis the use of biological toxins or infectious agents such as bacteria, viruses, and fungi with the intent to kill or incapacitate humans, animals or plants as an act of war.
Guerrilla warfare was a hit-and-run technique used in fighting a war; fighting of small bands using tactics such as sudden ambushes. It also usually involves fighting men who â¦ are not identified by uniform or any insignia. This makes it difficult to know who is an enemy and leads to killing of innocent people.