D ∨ ∼E

question 124

Multiple Choice

D ∨ ∼E

• A) AC-invalid.
• B) DS-invalid.
• C) Invalid.
• D) MP-valid.
• E) HS-valid.

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Definitions:

Operon

A functioning unit of genomic DNA containing a cluster of genes under the control of a single regulatory signal or promoter.

Regulatory Sequence

is a segment of DNA where regulatory proteins bind to control gene expression by turning genes on or off.

Repressor

A protein that binds to specific DNA sequences to prevent the transcription of genetic information from DNA to messenger RNA.

Metastasis

Spread of cancer from the place of origin throughout the body; caused by the ability of cancer cells to migrate and invade tissues.