Download Aptitude Crack
img not found img not found

DNA Structure and Replication - Medical Science

Q1:

What is the only common methylation in the DNA of eukaryotes?

A Adenosine in GpA dinucleotides

B Guanosine in ApGpA trinucleotides

C Cytosine in CpG dinucleotides

D None of the above

ANS:C - Cytosine in CpG dinucleotides

DNA methylation is a biological process by which methyl groups are added to the DNA molecule. Methylation can change the activity of a DNA segment without changing the sequence.