The activity levels of individual genes and clusters of genes may be affected by ________.
A) genetic anomalies
B) chromosomal anomalies
C) telomere length
D) DNA methylation

Question

Quizplus · Accepted Answer

DNA methylation can alter the activity levels of individual genes or clusters of genes by adding or removing methyl groups to the DNA molecule, which can affect the accessibility of transcription factors and RNA polymerase to the DNA template. Genetic and chromosomal anomalies may also impact gene activity, but they are not as direct and specific as DNA methylation. Telomere length affects the stability and integrity of chromosomes, but it is not directly related to gene expression.

The Activity Levels of Individual Genes and Clusters of Genes