It has been observed that viral particles often revert (back mutate to non-AZT-resistant populations when treatment with AZT is discontinued. What is the most likely reason for this observation?

What will be an ideal response?


There is no more selective pressure applied to the viral population, and in the absence of AZT the viral particles that reproduce most efficiently have not evolved enough to have the ability to discriminate against AZT.

Biology & Microbiology

You might also like to view...

The pairing of chromosomes along their lengths, which is essential for crossing over, is referred to as  

A.  syngamy. B.  synapsis. C.  prophase. D.  recombination. E.  centromere.

Biology & Microbiology

Which of the following is considered to be a plant behavior?

A. response to sunlight B. response to plant hormones C. response to touch D. response to gravity E. all of the choices

Biology & Microbiology

Prion diseases are always fatal and there is no treatment

a. True b. False

Biology & Microbiology

Open reduction

What will be an ideal response?

Biology & Microbiology