Retroviruses have extraordinarily high rates of evolution of all viruses because (SELECT ALL THAT APPLY):

Here are the options.

. They are single-stranded.

2. Their reverse transciptase has no proofreading capability

3. Their genetic material is RNA.

4. They disrupt the immune response.

The correct answer is because Their reverse transcriptase has no proof reading capability.

Explanation:

Retrovirus is a type of RNA that replicate it's copy and put it in the host cell DNA, there by changing it's genome. Retrovirus mutate at high rate in vivo viral replication. And this mutation in retroviruses may occur at different stages like during proviral transcription by RNA polymerase II, during minus-strand DNA synthesis (RNA template) by viral reverse transcriptase, or during plus-strand DNA synthesis (DNA template) by reverse transcriptase.

Retrovirus exhibit a high mutation rate. Polymerization errors during DNA synthesis by reverse transcriptase, has no proof reading capability, is a major method for generating genetic variation within retroviral populations.