During dna replication:

a. methylation of the dna is maintained because dna polymerase directly incorporates.
b. methylated nucleotides into the new strand opposite any methylated nucleotides in the template.
c. methylated dna is copied in the cytoplasm, and unmethylated dna is copied in the nucleus.
d. dna polymerase is blocked by methyl groups, and methylated regions of the genome are therefore left uncopied.
e. all methylation of the dna is lost at the first round of replication.
f. methylation of the dna is maintained because methylation enzymes act at dna sites where one strand is already methylated and thus correctly methylated daughter strands after replication.