Question

Retroviruses are implicated as a cause for cancer in humans because they

(a) carry, gene for reverse transcriptase 

(b) may carry cellular protooncogenes in their genome 

(c) may carry v-oncogenes tn their genome 

(d) carry single stranded RNA as their genetic material

Answer 1

The correct option is (b) may carry cellular protooncogenes in their genome .

Explanation:

Retroviruses are implicated as a cause of cancer in humans because they may carry cellular proto-onchogenes in their genome, when these proto-oncogenes gets converted into oncogenes due to some physical, chemical or biological agents they cause cancer.