This methodology enables researchers to determine if a cell or a gene is vital for some developmental biological process since it requires them extracting whatever cell or gene might be in question, and then seeing if the process is still able to take place. For instance, a group of researchers was able to find that the tiny mitochondrial genome that exists in plants is essential for the replication of cells by removing the genome and seeing the lack of adequate functioning that was enabled with the mitochondrial genome present (Binder, Brinnicke, 2003, p. 181). Lastly, the most reliable way of testing hypotheses in developmental biology is known as gain of functional evidence. This method involves seeing if a particular cell or gene is needed for a particular developmental biology process by adding it to an environment and seeing if that addition allows for such a process to take place. An excellent...

55).
References

Binder, S., Brinnicke, a. (2003). "Gene expression in plant mitochondria: transcriptional and post-transcriptional control." The Royal Society. 358. 181-189. Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1693100/pdf/12594926.pdf

Farquhar, M.G., Palade, G.E. (1962). "Functional evidence for the existence of a third cell type in the renal glomerus." The Journal of Cell Biology. 13 55-87. Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2106064/pdf/55.pdf