Summary
All organisms consist of a mixture of elements in differing ratios. Elements such as carbon, nitrogen, and phosphorus are needed to make the nucleic acids, proteins and other molecules that are the building blocks of cells. However, the availability of these elements in organisms’ environments often differs from the proportions needed by organisms. As a result, the availability of the scarcest element can limit growth. This project will explore how bacteria evolve in response to the scarcity of different elements. Bacteria will evolve under controlled laboratory conditions with varying ratios