Consider three types of mobile genetic elements that are found in our genome: the DNA-only transposons (D), the retroviral-like retrotransposons (R), and the nonretroviral retrotransposons (N). Which type appears to still be active and move in our genome, accounting for a detectable fraction of human mutations? Write down your answer as D, R, or N.

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Quizplus · Accepted Answer

Some nonretroviral retrotransposons (such as Alu elements) are still moving in our genome, accounting for perhaps two mutations out of every thousand new human mutations. Although our genome is also littered with relics of retroviral-like retrotransposons, none appear to be active today.

Consider Three Types of Mobile Genetic Elements That Are Found