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What is an intron?

A.

An intervening sequence that does not encode for proteins

B.

The portion of the transcript that encodes for protein

C.

A person with a recessive allele that the dominant allele silences

D.

One of a pair of genes that is inherited from a parent

Answer and Explanation

The Correct Answer is A

A. An intervening sequence that does not encode for proteins:

Introns are non-coding sequences within a gene that are removed during RNA splicing before translation.

B. The portion of the transcript that encodes for protein:

This describes an exon, not an intron.

C. A person with a recessive allele that the dominant allele silences:

This describes a carrier in genetics, not an intron.

 

D. One of a pair of genes that is inherited from a parent:

This describes an allele, not an intron.


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Related Questions

Correct Answer is A

Explanation

A. The general pathogen fighting system people are born with that does not change over time:

Innate immunity is nonspecific, present at birth, and provides immediate defense without adapting to specific pathogens.

B. The process in which endothelial cells are separated away from each other, making the capillaries larger:

This describes vascular permeability, a component of inflammation, not a definition of innate immunity.

C. The process by which the body automatically reacts to tissue injured by trauma or bacteria:

This describes the inflammatory response, which is a mechanism of innate immunity, but not the full definition of innate immunity itself.

D. The set of proteins that enhance the ability of the body to initiate the inflammatory response, attack a pathogen, and remove damaged cell material:

This describes the complement system, which is part of innate immunity, but again, it is not the complete definition of innate immunity.

Correct Answer is C

Explanation

A. A general low count of red blood cells:

This describes anemia, not hyperlipidemia.

B. Bulging or dilation of a portion of an arterial wall:

This describes an aneurysm, not hyperlipidemia.

C. Elevated levels of lipids in the bloodstream:

Hyperlipidemia means high blood levels of lipids (such as cholesterol and triglycerides).

D. A lack of red blood cell membrane proteins:

This is a description of certain types of hemolytic anemia, not hyperlipidemia.

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