Just like computers, biological systems can be seen as being composed of several different layers of complexity.
Studies biology from a more global point of view, if putting all little pieces of an organism make up the final biological function.
Some key activities:
- prokaryote models:
- E. Coli: the most well studied
- mycoplasma: a very minimal genus, notable species: Mycoplasma genitalium
- eukaryote
- S. cerevisiae: simplest eukaryote model. Unicellular.
- C. elegans: simplest multicellular organism model
- vertebrate:
- Zebrafish: simplest vertebrate model
- mammal:
- Mus musculus: simplest mammal model
The Evolution of Bacteria on a 'Mega-Plate' Petri dish by Kishony Lab (2016)
Source. They've made a huge Petri dish with bands of different concentrations of antibiotic, and then they visualize Escherichia coli mutations as new strains manage to make their way into the highest antibiotic concentration strip. mind blowing.Whatever it is that biology studies.