Dictionary » R » Ring chromosome

Ring chromosome

ring chromosome

A structurally abnormal chromosome in which the end of each chromosome arm has been lost and the broken arms have been reunited in ring formation. A ring chromosome is denoted by the symbol r.

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Eukaryotic and Prokaryotic

... or archaea bacteria. The genetic material in prokaryotes is one single, ring-shaped chromosome, while in eukaryotes it is in the form of rod-shaped chromosomes. Most bacteria ...

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by SteveYst
Wed Oct 03, 2012 1:39 pm
Forum: Cell Biology
Topic: Eukaryotic and Prokaryotic
Replies: 4
Views: 14574

Theories - Origin of Life

... I probably should have linked last time). Or perhaps you might consider ring species. :) The first point I noted in the wiki discussion was, this ... epigenetic mechanisms. This mechanism regulates the position of each chromosome in the nucleus and thereby determines the way and timing of how ...

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by AstraSequi
Tue Mar 27, 2012 2:41 am
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1127872

The Implausible Engines of Evolution

... more nothing less, with the extreme unlikelihood of being positive. The chromosome is not aware of surroundings. The chromosome is not a living thing. ... not have food in one area, then it will not survive there. This would ring true regardless of evolution. What I am debating is the repeatedly ...

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by Tomn
Fri Oct 07, 2011 9:27 pm
Forum: Evolution
Topic: The Implausible Engines of Evolution
Replies: 40
Views: 74320


... serum biochemical markers were unusual. All six of these cases had a chromosome anomaly or another genetic condition: Noonan syndrome, triploidy, ... Trisomy 18, Turner syndrome and a rare chromosome abnormality known as Ring 18-Monosomy 18. Our series underlines the fact that it is important ...

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by sometime
Fri Sep 09, 2011 1:34 pm
Forum: PDF & Doc Files
Replies: 4
Views: 6808

F plasmid in bacteria

... is formed? I see a bacteria cell diagram, it shows a large loop of a chromosome, and a small ring of F plasmid beside it. thanks for reading, Luke

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by SheffieldWednesdayFC
Tue Oct 13, 2009 12:24 am
Forum: Genetics
Topic: F plasmid in bacteria
Replies: 2
Views: 1212
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