What Is a Ring Chromosome?
If the break occurs at both ends of the chromosome, the two broken pieces can be bonded to each other, and the part carrying the mitochondria can form a circular chromosome through the bonding of the two broken ends.
Circular chromosome
- Chinese name
- Circular chromosome
- Foreign name
- ring chromosome
- End
- Two
- Shard
- No thread
- Exist in
- Prokaryote
- If the break occurs at both ends of the chromosome, the two broken pieces can be bonded to each other, and the part carrying the mitochondria can form a circular chromosome through the bonding of the two broken ends.
- If the break occurs at the two ends of the chromosome, the two broken pieces can be bonded to each other without centromere fragments, and the part with the centromere can be formed into a circular chromosome by the two broken ends. Fragments that do not carry mitochondria tend to disappear, while the mitochondria can continue to undergo mitosis. For example, when patients with chronic myelogenous leukemia transform into the acute direction, circular chromosomes are often seen.
- (1) Chromosomes such as E. coli are circular and are called circular chromosomes;
- (2) An abnormal chromosome in eukaryotes is a chromosome without a terminal. It occurs naturally, but is also common in hybrid offspring, and induced by radiation, chemical mutagens, etc .;
- (3) This term is sometimes used to indicate the general shape of a bivalent chromosome. When the first meiosis terminal metaphase reaches the middle stage, the divalent chromosome is near the midpoint and the two ends are crossed, which is called a circular chromosome.