Dictionary definition: accessory chromosome

Article: McClung, Clarence Erwin
Complete Dictionary of Scientific Biography;      700+ words ... ... 1946) cytology, zoology . Through his studies on the accessory chromosome in insects, Clarence E. McClung contributed significantly ... inheritance. In 1901 and 1902 he pointed out that the accessory chromosome (or X chromosome as it is sometimes called) was possibly ...

Dictionary definition: supernumerary chromosome
A Dictionary of Biology;      225 words ...supernumerary chromosome See accessory chromosome .

Article: Researchers Create First Artificial Human Chromosomes
PR Newswire;  April 1, 1997 ;     700+ words ... ... therapy." The synthetic microchromosome remains independent within the host cell and functions essentially as an accessory chromosome. In contrast, most gene therapy systems currently under development utilize viral vectors, which often require ...

Dictionary definition: B-chromosome
A Dictionary of Biology;      218 words ...B-chromosome See accessory chromosome .

Article: Scientists build mock chromosomes First artificial chain of human ...
The Milwaukee Journal Sentinel;  April 1, 1997 ;     700+ words ... ... appears to co-exist with the natural ones. It appears to divide and multiply normally, surviving as a kind of accessory chromosome for at least six months, the researchers said. In theory, the artificial chromosomes could be custom-designed ...

Article: Laser surgery is eye-opener
Honolulu Star - Bulletin;  August 15, 2002 ;     700+ words ... ... the ophthalmologists pointed out. Night-vision problems with glare and halos occurred with older lasers because the enlarged pupils exceeded the treated zone, Portis said. With LADARVision he said, "If a person has very large pupils in darkness, and ...

Article: A teetotal New Year? It's enough to drive you to drink.
The Daily Mail (London, England);  December 30, 2004 ;     700+ words ... ... already mentioned. I can see the glance downwards as they study me for signs of baby bump, strange rash, yellow skin, enlarged pupils or beads and sandals. Life was easier when I smoked. A teetotal smoker has a vice and is therefore still regarded as one ...