How are LINES related to retroviruses?
◦ they encode reverse transcriptase but lack LTRs.
◦ they have LTRs but lack reverse transcriptase.
◦ they have both LTRs and reverse transcriptase but prime DNA synthesis differently.
◦ they have both LTRs and reverse transcriptase and prime DNA synthesis the same way.
◦ they have no relationship.