Dna methylation is process that cells undergo frequentlly to 'turn off'' gene expression a methyl group, which is a small spherical shaped molecule comprised of one caron and 3 hydrogens, attaches at a specific site on a nitrogenous base. a nitrogenous base is either has a penthagonal shape or a hexagonal shape, which of the fllowing would most likely likit methylation from proceeding properly?
a. improper orientation of molecles
b. lack of energy
c. sub-optimal temperature
d. lack of a collision