The discovery ofa short stretch of DNA called the homeobox apparently provides a crucial part of the answer in a remarkably wide range of organisms (scientificamerican.com)
These germline, inherited mitochondrial DNA insertions are seen over a wide range of organisms, including humans, plants, yeast, malaria parasites and nematodes. (sciencedaily.com)
We have used our transcontinental express to identify and study the functions of several genes that appear to be the very cogs and wheels in the works of the biological clock that controls the day - night cycles of a wide range of organisms that includes not only fruit flies but mice and humans as well. (scientificamerican.com)