How does a retrotransposon move? 1. It first is transcribed into RNA, then a rev

Question

How does a retrotransposon move? 1. It first is transcribed into RNA, then a reverse transcriptase produces a DNA copy, and finally the DNA integrates into a new site. 2. It first is transcribed into RNA, which is then translated into a protein that coats the RNA and allows it to attach to another genomic location, where it can be integrated during DNA replication. 3. None of the above is correct. 4. It first produces transposase, which then binds the inverted repeats, and allows it to be removed from its original location and integrated into the genome at a new site. 5. It first makes a DNA copy of itself, which is then transcribed into RNA, and finally the RNA is integrated into the genome. How does a retrotransposon move? 1. It first is transcribed into RNA, then a reverse transcriptase produces a DNA copy, and finally the DNA integrates into a new site. 2. It first is transcribed into RNA, which is then translated into a protein that coats the RNA and allows it to attach to another genomic location, where it can be integrated during DNA replication. 3. None of the above is correct. 4. It first produces transposase, which then binds the inverted repeats, and allows it to be removed from its original location and integrated into the genome at a new site. 5. It first makes a DNA copy of itself, which is then transcribed into RNA, and finally the RNA is integrated into the genome.

Explanation / Answer

2. It first is transcribed into RNA, which is then translated into a protein that coats the RNA and allows it to attach to another genomic location, where it can be integrated during DNA replication.

Retrotransposons (also called transposons via RNA intermediates) are genetic elements that can amplify themselves in a genome. These are most commonly present in plants.Almost 42% of human genes are retrotransposons.

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