Wholesale prices for bait crawfish are around $4.00 a pound. Retail prices in Alabama for bait crawfish are $7.00 a pound or $2.50 a dozen. In order to consistently catch bait crawfish, the traps should be constructed with 1/2-inch mesh instead of the usual 3/4-inch mesh.
DNA forensics: The application of DNA technology and the knowledge of DNA genetics to the practice of forensic medicine and to the power of legal medicine. Crime scene investigation has been markedly changed -- some would say revolutionized -- by the advent of DNA forensics. This has led to the invention of devices for DNA forensics. One is a plate of glass about the size of a hand is etched with very thin channels and reservoirs. A minute sample of DNA is moved between reservoir and channel through timed electric pulses. These thin channels then act like capillary tubes and can resolve the constituents of this minute sample of DNA.
Private forensic laboratories, some dedicated just to DNA analysis, also exist. Many labs have the ability to conduct testing on nuclear DNA, which is the copy of DNA that exists in the nucleus of every cell. But only a few labs offer more specialized techniques, such as Y-chromosome or mitochondrial DNA analysis. Let's look at some of these techniques in greater detail. Restriction fragment length polymorphism (RFLP) analysis was one of the first forensic methods used to analyze DNA.