In Vertebrates,DNA Methylation - the Addition of a Methyl Group

question 36

Multiple Choice

In vertebrates,DNA methylation - the addition of a methyl group to DNA nucleotides - ensures that

• A)the gene functions without interruption.
• B)no errors will be made during transcription.
• C)the nucleosome will quickly form,which assists in mRNA formation.
• D)once that gene is transcribed,the mRNA is saved and used over and over again.
• E)once a gene is turned off,it will remain off.

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Definitions:

Sensation

The stimulation of sensory receptors and the transmission of sensory information to the central nervous system.

Perception

The process by which individuals interpret sensory information to give meaning to their environment.

Hypothesis

In psychology, a specific statement about behavior or mental processes that is tested through research.

Independent Variable

The variable in an experiment that is manipulated to observe its effect on the dependent variable.