Dna can undergo many types of modifications. one of these is methylation. which base(s) is(are) methylated more often in human dna? a-guanineb-cytosinec-thymined-adeni ne

B-cytosine

Explanation:

DNA methylation is the addition of methyl group to the DNA which further  modifying function of genes and the affecting gene expression.

Out of the two of the DNA's four bases, the bases that can be methylated are cytosine and adenine.

In humans, the most widely DNA methylation is covalent addition of methyl group at 5-carbon of cytosine ring which results in 5-methylcytosine.

good one: produce hormones that plants grow.

bad one: the problem with organic matter is that while plant nutrients are needed for crop growth, they can also stimulate excessive growth of the wrong plants – mainly, algae.