Answer:
Urine is the yellowish liquid which is excreted from our body by the urethra.
Urea is a colourless substance that is found especially in the liquid waste that is passed from your body .
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Noncoding sections are used in dna fingerprinting, as they are easily identifiable, abundant, and passed on from parent to child through genes. If you can get a relative with similar noncoding sections, then you could compare similarities in the DNA.
It played a very big role as without collaborative work from multiple scientists who were working on the discovery of DNA, it would have postponed its discovery by decades perhaps. For that reason - yes, communicating results played a major role in the discovery of the structure of DNA.