The well of your agarose gel can fit 30 ��l of sample. you would like to load 50 ng of a dna sample that has a concentration of 10 ng/��l. you have been provided with sterile water and 6 x concentrated gel loading buffer. how much of each component (dna, water and 6 x glb) should you mix to end up with 50 ng of dna in a total sample volume of 30 ��l? hint: identify your c1v1, c2v2.

12) several teeth were found in an area of flat land covered with trees and plants. the teeth were examined by a paleontologist, and it was determined that the teeth came from a shark. they found many other shark teeth in this area. however, the people who discovered the teeth were puzzled, because there was no source of water near where the fossils were found. what is the paleontologist's best explanation for why the teeth were found in this area? a) sharks used to live on flat land. b) this area was once covered with salt water. c) this area was once covered with freshwater. d) someone buried the shark teeth deep in the ground.