Which of the following most adequately describes how the Alu element may have proliferated to constitute 10% of the human genome?
A. Retrotransposons show self-proliferation.
B. A single retrotransposon can be copied into many RNA transcripts.
C. Retrotransposons increase with every generation.
D. Multiple retrotransposons code the same gene.
E. Retrotransposons increase with each cell division.
Answer: B
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