DNA is genetic material found in the cells of all living organisms. It serves as a blueprint for how the individual grows, looks and functions. Every human, fish, or bacterium has its own unique ...

Using these simple tools, he and his team collected water samples from the lower Hudson and East Rivers to obtain traces of DNA that had been sloughed off by various fish species. “We threw the bucket ...

(A) FISH produces a fluorescent signal (red) at the sites of a specific DNA sequence; in this case, a 150-kb segment of chromosome 1. (B) Several probes, each corresponding to a defined genomic ...