A chromosome analysis was performed on cultured bone marrow fibroblasts (CFU-F) from two atomic bomb survivors exposed within 1 km of the hypocenter, whose estimated radiation dose is 357 rad and 365 rad respectively. In CFU-F of both cases, stable types of chromosome aberrations were detected. The rate of these chromosome aberrations related well to the chromosome aberration rate of peripheral...

Ring chromosomes are circular chromosomal abnormalities that have been reported in association with some genetic disorders and cancers. In Schizosaccharomyces pombe, lack of function of protection of telomere 1 (Pot1) or telomerase catalytic subunit (Trt1) results in survivors with circular chromosomes. Hitherto, it is poorly understood how cells with circular chromosomes survive and how circul...

 In network code setting, a constant dimension code is a set of k-dimensional subspaces of F nq . If F_q n is a nondegenerated symlectic vector space with bilinear form f, an isotropic subspace U of F n q is a subspace that for all x, y ∈ U, f(x, y) = 0. We introduce isotropic subspace codes simply as a set of isotropic subspaces and show how the isotropic property use in decoding process, then...

Marker assisted backcrossing has been used effectively to transfer the submergence tolerance gene SUB1 into popular rice varieties, but the approach can be costly. The selection strategy comprising foreground marker and phenotypic selection was investigated as an alternative. The non-significant correlation coefficients between ranking of phenotypic selection and ranking of background marker se...

The objective of this study was to estimate the contribution of each autosome to genetic variation of milk yield, fat, and protein percentage and somatic cell score in Holstein cattle. Data on 2294 Holstein bulls genotyped for 39,557 autosomal markers were used. Three approaches were applied to estimate the proportion of genetic variance attributed to each chromosome. In two of them, marker-der...

TRAIN K-12 of Escherichia coli has played a preeminent role in the study of bacterial sexuality. New knowledge of the mechanism of sexual differentiation and the development of more sensitive techniques and test strains have subsequently brought many more bacteria within the orbit of this breeding system. The immunogenetics of Salmonella poses many interesting problems ( LEDERBERG and IINO 1956...