The haploid human genome contains about 3 × 109 nucleotides. on average, how many dna fragments would be produced if this dna was digested with restriction enzyme psti (a 6-base cutter)? rsai (a 4-base cutter)? how often would an 8-base cutter cleave?
i'm looking for how to work the problem, not just the answer. my guess, to start, is:
4 nucleotides, 6-base cutter; 46 = 4096
( 3x109 ) / 4096 = 73,2421.875
pstl would have aprox. 73k fragments?

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.

the answer is d. none of the above