Which sentence about tectonic plates is true?
A
Tectonic plates are in the lithosphere.
B
Tectonic plates can flow slowly.
C
Tectonic plates have only continental crust.
Tectonic plates are most often smaller than land masses on maps.

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?