An Individual Has Been Infected with a Particular Retrovirus

question 9

Multiple Choice

An individual has been infected with a particular retrovirus.In order for the latent virus DNA to be inherited by subsequent generations stemming from this individual,it must be found

• A)in germ line cells.
• B)in stem cells.
• C)at a point early in childhood.
• D)in all cells simultaneously.
• E)in somatic cells.

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Definitions:

Base-pair Substitution

A type of genetic mutation where one nucleotide base is replaced by another, leading to changes in the DNA sequence.

Sickle Cell Anemia

A genetic blood disorder characterized by red blood cells that assume an abnormal, rigid, sickle shape, leading to severe pain and potential organ damage.

Frameshift

A type of genetic mutation caused by insertions or deletions of a number of nucleotides in a DNA sequence that is not divisible by three, leading to a shift in the reading frame of the genetic message and resulting in a potentially nonfunctional protein.

Transposable Element

A DNA sequence that can change its position within the genome, potentially altering or disrupting the genes into which it moves.