What is most likely happening to the genetic variation of the population of north east arctic cod? the genetic variation in the population is increasing due to selective pressure. the genetic variation in the population is decreasing due to selective pressure. the genetic variation in the population is increasing due to gene flow. the genetic variation in the population is decreasing due to gene flow.

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?