Cells methylate their own DNA toــــــــــــــــــــ .
A)mark the DNA for degradation
B)prevent replication
C)protect the DNA from the cell's own restriction enzymes
D)stabilize the DNA double helix

Question

Quizplus · Accepted Answer

Cells methylate their own DNA in order to protect it from the cell's own restriction enzymes. Methylation of the DNA can serve as a signal to indicate that the DNA is "self" and should not be degraded by restriction enzymes, which recognize and cleave unmethylated DNA from foreign sources. This process is important for maintaining the integrity of the cell's own genomic DNA.

Cells Methylate Their Own DNA Toــــــــــــــــــــ