Retroviruses have a +ssRNA as their genome.In order to complete an infection,they must first make a __________ molecule,which they use to direct the synthesis of mRNA.

Question

Quizplus · Accepted Answer

Retroviruses must first use the enzyme reverse transcriptase to convert their +ssRNA genome into a complementary -ssDNA molecule. This -ssDNA then serves as a template for the synthesis of +ssRNA and ultimately mRNA, which can be used to produce viral proteins. Therefore, the correct choice is B) dsDNA, as retroviruses produce a double-stranded DNA intermediate during their replication cycle.

Retroviruses Have a +SsRNA as Their Genome