It was at the end of the 19th century that a Swiss biologist, Karl Nageli first proposed the existence of hereditary organelles that carried information from parent to offspring. Ensuing decades experienced vigorous studies that led to the development of discovery that chromosomes are indeed the carriers of genetic information. Subsequent studies, especially by Morgan and Bridges, established unequivocally the chromosome theory of inheritance. Today, the structure of chromosome is well established. At the physical level, eukaryotic chromosomes are composed of a single, linear, double helix of DNA. The elementary helical structure involves nucleosomes, comprised of histones around which the DNA is wrapped. A hierarchy of higher order of chromosomal architecture may possibly be responsible for the regulation of gene helical structures expression. The localized condensations of DNA constitute chromomeres. Uncoiled structures sometimes extending from chromomeres, which form loops, is the result of discontinuities in the regular coiling of the DNA in the chromosome.
Also contains an article on chromosomal radiosensitivity as an indicator of genetic predisposition to breast cancer. The molecular genetics of various cancers, viz. gastrointestinal, lung, prostate and bladder have also been discussed.
The book contains color illustrations and charts; and the included CD-ROM contains dozens of video clips, animations, molecular structures, and high-resolution micrographs. Annotation copyrighted by Book News Inc., Portland, OR.
Tausta, S.L., Turner, L.R., Buckley, L.K. & Klobutcher, L.A. (1991) High fidelity developmental excision of Tec1 transposons and internal eliminated sequences in Euplotes crassus. Nucleic Acids Research 19, 3229–3236.
'Chromosome Structure and Function' will be an invaluable resource for undergraduate and postgraduate students in fields such as plant and animal sciences, genetics, and molecular biology.
The purpose of this manual is to provide an educational genetics resource for individuals, families, and health professionals in the New York - Mid-Atlantic region and increase awareness of specialty care in genetics.
Eukaryotic Chromosomes: Structural and Functional Aspects
This is especially clear for higher cells, including human cells, in which chromatin fibers are created by the binding of histone proteins to the DNA, and folding of the fibers produces mitotic chromosomes and interphase nuclei.
Michael S. Risley ... Dingwall , C .; Lomonossoff , G. P .; and Lasky , R. A. ( 1981 ) . ... S. M .; Slightom , J. L .; Blechl , A. E .; Smithies , O .; Baralle , F. E .; Shoulders , C.C .; and Proudfoot , N. J. ( 1980 ) .
A Historical Perspective on the Study of Chromosome Structure and Function R. Appels Division of Plant Industry CSIRO P.O. Box 1600 A.C.T. AUSTRALIA "Modern physical science gives us no model to explain the re duplication of the gene-string ...
Providing students, researchers, and technicians in the areas of medicine, genetics, and cell biology with a concise, understandable introduction to the structure and behavior of human chromosomes, this new edition...