Question

Which statement is FALSE?

a) Yeast Ty retrotransposon represents previous step in evolution of retroviruses- it gets packaged, is transported, needs to get env functions, and learn how to bud-out from the cell.
b) Yeast Ty retrotransposon does not have LTR direct repeats.
c) Yeast Ty retrotransposon generates virus-like particles which translocate from cytoplasm to the nucleus, but do not rupture the cell.
d) Yeast TyB gene encodes protease, reverse transcriptase and integrase.

Answer 1

The statement 'Yeast Ty retrotransposon does not have LTR direct repeats' is false, as Ty elements do have LTRs, which are crucial for their function as retrotransposons.

Step-by-step explanation:

When analyzing the characteristics of yeast Ty retrotransposons and comparing them to retroviruses, it becomes clear that one statement provided is false. The Yeast Ty retrotransposon does have LTR direct repeats, as this is a defining feature of the LTR retrotransposons, which include Ty elements. These long terminal repeats (LTRs) are important for the integration process of the retrotransposon into the host genome. Therefore, the correct answer is:

b) Yeast Ty retrotransposon does not have LTR direct repeats.

This statement is false because, by definition, LTR retrotransposons such as Ty elements do have LTRs, which contain necessary regulatory elements for their transcription and integration into the host genome.