Resources

List by Alphabet: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

a Related Biological Terms:

chromatin

The complex of DNA and associated proteins, most notably histones, that occurs in the nuclei of eukaryotic cells. van Holde, K. and Zlatanova, J. (1995) J. Biol. Chem. 270, 8373-8376

chromatogram

A graphical representation of a chromatographic separation, e.g. absorbance or radioactivity of the eluate (ordinate) plotted as a function of eluate volume (abscissa).

chromatophore

An epithelial cell of a lower animal in which pigment granules can be physically moved to effect colour changes.

chromatophoresis

A technique for protein separation that uses high-pressure liquid chromatography followed by sodium dodecyl sulphate (SDS)/polyacrylamide-gel electrophoresis. The effluent from a reverse-phase column is mixed with SDS and a reducing agent and applied to a polyacrylamide slab gel; the resulting gel shows two-dimensional separation, by polarity in one dimension and by molecular mass in the other. Check our biology tool: real time pcr

chromosomal banding

(see AT queue)

chromosomal map

The localization of genetic traits to regions of chromosomes, by linkage studies (e.g. the association of haemophilia with the X chromosome) and by in situ hybridization to fluorescent probes.

chromosome landing

In positional cloning, an alternative to chromosome walking for finding a gene. Clones of genomic DNA are fragmented so as to include both the target gene and a closely linked marker and are screened to select ('land on') those clones that contain the target gene. Tanksley, S.D., Ganal, M.W. and Martin, G.B. (1995) Trends genet. 11, 63-68 Related tool: molecular biology tools

chromosome painting

(= coincidence painting (chromosome painting))

chromosome walking

A strategy for mapping and sequencing a chromosome. Large restriction fragments are generated and, by Southern blotting with an RNA or cDNA probe, a single starting point is identified. New probes are synthesized from sequences of the same fragment that are adjacent to the starting point, and are then used to identify different restriction fragments adjacent to that which bears the starting point. The procedure is used repetitively, working towards the ends of the chromosome and away from the starting point. Related tool: real time pcr

circadian rhythm

The cyclical pattern of daily increases and decreases in enzyme and hormone levels and other physiological functions. Kay, S.A. and Millar, A. (1995) Cell 83, 361-364

< 39 40 41 42 43 44 45 46 47 48 49 > Total Pages 251

If you know of any terms that have been omitted from this glossary that you feel would be useful to include, please send detail to the Editorial Office at GenScript: website@genscript.com

If your term is adopted, we will send 1,000 EzCoupon points to your GenScript account.