16. 4 Yeast Ty elements resemble retroviruses d JyA ryB Figure 16 12 Ty elements terminate in 5.7 kb RNA short direct repeats and are transcribed into 5.0 kb RNA two overlapping RNAS. TyA protein They have two reading frames. with sequences Frames hift related to the retroviral gag and pol genes TyA-B protein 消当Figure 16.12 Ty elements terminate in short direct repeats and are transcribed into two overlapping RNAs. They have two reading frames, with sequences related to the retroviral gag and pol genes. 16.4 Yeast Ty elements resemble retroviruses