Question

During DNA replication:

Answer 1

Answer: Option F.

Methylation of DNA is maintained because methylation enzymes occur at DNA sites where one DNA strand is already methylated and thus correctly methylated daughters strand after replication.

Explanation:

DNA methylation is an epigenetic mechanism in which a methyl (CH3)group is added to the DNA which change the gene activities and affect it's expression. The methyl group project into the groove of the DNA. DNA methylation play a major role in regulating gene expression and the modifications occur at a particular location in the genomes of different species.

Answer 2

Answer:

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.

Explanation:

DNA methylation is the addition of methyl group to DNA.it is an example  of EPIGENTICS mechanism  in genetics( epigentic refers to modification of expression of genes instead of altering the gene codes),

The objective of this mechanism is to modify the  function of the particular GENE, therefore affecting the expression of the gene,