You are studying a particular gene in mice. In one sample of the genome from a mouse, you find that the gene that you have been studying has moved to a completely different location in the genome. The gene that has moved to the new location is bounded by inverted repeat sequences. What is responsible for this finding?
A) unequal crossing-over
B) a retrotransposon
C) a chromosomal duplication
D) a chromosomal inversion
E) a DNA transposon

Question

Quizplus · Accepted Answer

The presence of inverted repeat sequences bounding the gene that has moved to a new location in the genome is characteristic of a DNA transposon. DNA transposons move within the genome by a "cut and paste" mechanism, which often involves such repeat sequences at their insertion sites.

You Are Studying a Particular Gene in Mice