Urea, a chemical found in urine, can be used to make simple genetic molecules similar to DNA – which could have been the basis of the first life on Earth
Source:
https://www.newscientist.com/article/2219550-life-may-have-begun-with-simple-genes-made-out-of-urine/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home