Lesson plan
D-loop replication
D-loop replication is a proposed process by which circular DNA molecules like those found in many (though not all) chloroplasts and mitochondria replicate their genetic material. These circular chromosomes often contain D-loops, short regions of triple-stranded DNA where the double-stranded duplex molecule is opened and one of the strands is displaced by a third, independent strand of variable length. Not all circular genomes use D-loop replication, however, nor do all chloroplasts and mitochondria use circular chromosomes; in those with linear chromosomes, D-loop replication does not occur.
Article summary
D-loop replication is a proposed process by which circular DNA molecules like those found in many (though not all) chloroplasts and mitochondria replicate their genetic material. These circular chromosomes often contain D-loops, short regions of triple-stranded DNA where the double-stranded duplex molecule is opened and one of the strands is displaced by a third, independent strand of variable length. Not all circular genomes use D-loop replication, however, nor do all chloroplasts and mitochondria use circular chromosomes; in those with linear chromosomes, D-loop replication does not occur.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.