Question

what is the name of the process that attaches methyl groups to dna to control how genes are expressed?
(1 point)
○ nondisjunction
○ replication
○ transcription
○ methylation

Explanation:

To solve this, we analyze each option:

• Nondisjunction: Error in chromosome separation during cell division, not related to DNA methylation.
• Replication: Process of copying DNA, not about attaching methyl groups.
• Transcription: Synthesis of RNA from DNA, not methyl group attachment.
• Methylation: Process of adding methyl groups to DNA, which controls gene expression.

Answer:

D. Methylation