MUTABLE LOCI IN MAIZE t,

Chromosome Organization and Genic Expression

E in maize has been undertaken. This study has provided a unique opportunity to examine the muI t tation process at a number of different loci in the chromosomes. For some of these loci, several independent inceptions of instability have 1 occurred during the progress of this study. The types of mutation that appear, and the types of instability expression, need not be the same at any one locus...

Mutable Loci In. Maize

"The Origin and Behavior of Mutable Loci in Maize" (1950), by Barbara McClintock

"The Origin and Behavior of Mutable Loci in Maize," by Barbara McClintock, was published in 1950 in the Proceedings of the National Academy of Sciences [2] of the United States of America. McClintock worked at the Cold Spring Harbor Laboratory [3] in Laurel Hollow, New York, at the time of the publication, and in the article she describes her discovery of transposable elements in the genome [4]...

The origin of an unstable locus in maize.

I N maize many unst(ab1e gene loci can, upon analysis, be ascribed to specific mutable systems. Often these systems consist of two units: a controlling element, such as Ds or Z, which responds to a regulatory element, Ac or En, respectively (PETERSON 1965). In addition, in cultures known to contain elements of a mutable system, such1 as Ac-Ds (MCCLINTOCK 1950, 1951) or En-Z (PETERSON 1960, 1961...

The genetics of a mutable gene at the white locus of Drosophila melanogaster.

LMOST coincidental with the rediscovery of Mendelism, genes of high sponA taneous mutation rate, often referred to as unstable, labile or mutable genes, were found. Such mutable genes, although not described as such, were identified in association with variegated phenotypes especially noticeable in plants as flower color variegation. R. A. EMERSON (1914, 191 7) from his studies of variegated pe...