Describe the process of natural selection.

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.

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?

11. a nursing assistant works in a home healthcare setting with a patient. during a procedure, a blood spill occurs. the nursing assistant put on her ppe and gets some paper towels. she removes the visible blood by blotting it up with the paper towels. next, she should place the paper towels in the trash. wash her hands using proper technique get a disposable mop. place the paper towels in a biohazard bag