Afossil of a fern and other large-leafed plants were found in an area of alaska. what does this suggest about this area in alaska?
a. a forest is now covered with snow.
b. a farm was once located in the area. eliminate
c. the area once had a warmer climate.
d. prehistoric man ate large-leafed plants

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?