Which of the following statements is correct? select one: a. this electropherogram, which shows the results of a sequencing experiment using the chain terminator method, is from an individual who is homozygous in the region of the genome being sequenced. b. the greater complexity of humans compared to nematodes (roundworms) is a reflections of the significantly larger number of protein coding genes in the human genome relative to the nematode genome. c. in the polymerase chain reaction, the amount of dna synthesized increases linearly with the number of cycles of amplification. d. dna polymerases always read a template in the 5' to 3' direction. e. during gel electrophoresis, larger dna molecules run more slowly than smaller dna molecules because the larger dna molecules have a smaller charge-to-mass ratio. f. adenine exists primarily in its keto tautomeric form. g. chargaff's rules are a consequence of the base pairing scheme in dna. h. unlike a nucleotide, a nucleoside lacks an n-glycosidic bond.