Question

Which of the following statements is FALSE? Inactivation of a gene by the insertion of an...

Which of the following statements is FALSE?

Inactivation of a gene by the insertion of an autonomous DNA transposon is an unstable mutation; the gene can be reactivated by transposition of the element.

Nonautonomous DNA transposons are transposons that have mutations in their terminal inverted repeats.

Transposable elements can contain genes other than those needed for transposition and still retain the ability to transpose.

piRNA is used to block the movement of transposable elements.

Homework Answers

Answer #1

1) piRNA block the movement of transposable elements so it is true.

2) Transposons area having many inactively encoding polypeptides so they are having anility for Transposition ans also contain many other inactively encoding genes.

3) third last statement is wrong. non autonomous transposons have to transposes, so that they cannot move. there is no proof of mutation in the inverted Repeats.

4) the first statement is wrong. an altered gene cannot be repaired by transposable elements till now. the gene expressions maybe active or inactive in that case.

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