Which of the Following Statements Is True Regarding Heterochromatin

question 3

Multiple Choice

Which of the following statements is true regarding heterochromatin?

• A) It stains lightly when stained with Feulgen reagent.
• B) It represents transcriptionally active regions of the chromosome.
• C) Specialized chromatin structures (scs) can insulate genes from the effects of heterochromatin.
• D) Euchromatic genes that are artificially placed next to heterochromatin are transcribed at abnormally high levels.
• E) Heterochromatin is hypersensitive to DNAse digestion.

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Definitions:

Pain-Controlling Chemicals

Biological substances produced by the body, such as endorphins, that help to naturally relieve pain.

Neurons

Special cells found in the nervous system that are designed to transfer information to other nerve cells, muscles, or glandular cells.

Inhibitory Neurotransmitter

Chemical substances released by neurons in the brain to decrease the activity of other neurons, thus reducing excitability and preventing overstimulation.

GABA

A major inhibitory neurotransmitter in the brain involved in reducing neuronal excitability throughout the nervous system.