In a reef off the coast of a large island, an increase in net fishing lowers the populations of most reef fish (including stoplight parrotfish, queen angelfish, yellowtail snappers, and nassau groupers). the heavy nets also trap hawksbill sea turtles and damage corals. these animals eat sponges. assuming the reef has a healthy population of long-spined sea urchins, what is the most likely result

Assume that you are interested in separating short (200-400 bp) dna molecules from a pool of longer molecules in the 10,000-20,000 nucleotide range. you have two recipes for making your polyacrylamide gels: one recipe uses 1.5 percent agarose and would be considered a “hard gel,” while the other uses 0.5 percent agarose and would be considered a loose gel. which gel should you use to separate the short (200-400 bp) dna molecules from a pool of longer molecules in the 10,000-20,000 nucleotide range?