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Now showing items 41-60 of 122
Medical genetics : impact and strategy : (genetic disease, birth defects, prenatal diagnosis)
(University of Missouri, Agricultural Experiment Station, 1980)
Genetic diseases and birth defects have a major impact on all levels of health care because of their enormous consequences for the individual and family and because of the high frequency of occurrence. That over 3000 ...
The topology of homologous pairing : (genetic recombination, RecA protein, strand crossover, joint molecules, heteroduplex joints, branch migration)
(University of Missouri, Agricultural Experiment Station, 1980)
The RecA protein, which is essential for genetic recombination of E. coli , promotes homologous pairing in vitro. Studies of purified RecA protein have shown that it promotes the homologous pairing of a number of topological ...
Fossils, apes, man, and culture : intelligence, water, menopause
(University of Missouri, Agricultural Experiment Station, 1979)
As causal agents for the separation of the pongid and hominid lines of evolution intelligence, water and the menopause are discussed. The implications of these for the development of human culture and society are investigated.
Quantitative analysis of Iowa stiff stalk synthetic
(University of Missouri, Agricultural Experiment Station, 1983)
Stiff Stalk Synthetic is a synthetic variety that was deloped in the early 1930's by recombining 16 inbred lines that were considered to be above average for stalk quality. Because of the origin of the lines included in ...
Chromatin as a model system for studying the regulation of histone gene expression in mammalian cells : (mRNA, chromosomal proteins, transcription, cell cycle)
(University of Missouri, Agricultural Experiment Station, 1977)
Histone gene expression was studied during the cell cycle of continuously dividing HeLa S3 cells and after stimulation of confluent monolayers of WI-38 human diploid fibroblasts to proliferate. The presence of histone mRNA ...
Analysis of gene number and development in polygenic systems : (polygenes, variation, selection, pattern)
(University of Missouri, Agricultural Experiment Station, 1977)
The assumption that quantitative variation is produced by a large number of genes is re-examined. In fact, one finds that often only a small number of loci are involved. This, therefore, opens to careful study the developmental ...
The genetic complexity of the R locus in maize : (gene complex, regulatory elements, paramutation)
(University of Missouri, Agricultural Experiment Station, 1977)
The evidence on the compound structure of the R locus is reviewed. The more recent analysis of another group of R accessions, collectively known as R-cherry, seems to indicate that this locus is a gene cluster separable ...
A genetic pathway for dauer larva formation in caenorhabditis elegans : (nematode, development, neuron)
(University of Missouri, Agricultural Experiment Station, 1977)
C. elegans is a roundworm, a free-living soil nematode. The dauer larva is a non-feeding, non-growing larval stage which is formed under conditions of starvation. It possesses a relatively impermeable cuticle and differs ...
Polypeptide composition of fraction I protein as an aid in the study of plant evolution : (chloroplast DNA, age of genera and species, origin of genomes, composition of proteins as affected by amphiploidy)
(University of Missouri, Agricultural Experiment Station, 1977)
Fraction 1 protein (F-1-P), found in all green plants, consists of eight large subunits (LS) coded by chloroplast DNA and eight small subunits (SS) coded by nuclear DNA. By electrofocusing in 8M urea many different species ...
On the organization of DNA in isolated bacterial chromosomes : (bacterial DNA, folded chromosomes, EM, RNA)
(University of Missouri, Agricultural Experiment Station, 1977)
We review physical studies and electron microscopy of membrane-free folded chromosomes from E. coli [Kavenoff and Bowen, Chromosoma 59, 89 (1977)], and we consider the apparent relation between the organization of the DNA ...
Extension of BrdU-dye analysis of DNA replication and sister chromatid exchange formation to in vivo systems : (in vivo, BrdU-dye, DNA replication, sister chromatid exchange)
(University of Missouri, Agricultural Experiment Station, 1977)
BrdU-dye methodology was initially developed in tissue culture. Wide application of the technique for cytogenetic studies of DNA structure, replication and repair followed. Although the need for parallel in vivo studies ...
Meiotic aspects of chromosome organization : (meiosis, pachytene DNA)
(University of Missouri, Agricultural Experiment Station, 1983)
Homologous chromosome pairing regulates the expression of a set of metabolic activities that is unique to the zygotene-pachytene interval , These activities probably relate to crossing-over and they involve specific proteins ...
Genetics of nitrogen fixation : (nitrogenase, molybdenum, ammonium excretion, legumes)
(University of Missouri, Agricultural Experiment Station, 1977)
Recent advances in understanding the genetics of nitrogen fixation have provided ideas for novel application of nitrogenase and nitrogen-fixing organisms. Mutant strains have been useful for identifying the active site of ...
Genetics and evolution of the chloroplast : (cytoplasmic inheritance, nucleus-cytoplasm interaction, plastome recombination, plastome mutator, oenothera)
(University of Missouri, Agricultural Experiment Station, 1983)
As a photosynthetic organelle and as the site of several important biosynthetic pathways, the chloroplast is essential to the survival of the plant cell. In evolutionary terms, the chloroplast genetic material can be ...
Measures of fitness in Drosophila : (population genetics, Drosophila, fitness, natural selection)
(University of Missouri, Agricultural Experiment Station, 1983)
Ten proposed experimental measures of fitness in Drosophila have been estimated in 8 to 38 strains of D. melanogaster with 1 to 6 replications in order to assess the degree of association among the measures. One measure ...
Chromosome manipulation and its exploitation in the genetics and breeding of wheat
(University of Missouri, Agricultural Experiment Station, 1983)
Chromosome manipulation in bread wheat uses aneuploid methods to transfer whole chromosomes or segments of chromosomes from one variety into another, or from related species into wheat. These methods have been applied ...
Molecular and developmental cytogenetics of gene multiplicity in maize : maize, cytogenetics, ribosomal RNA, endosperm, gametes
(University of Missouri, Agricultural Experiment Station, 1983)
Gene multiplicity alterations may be an important feature of maize developmental biology. A developmentally-phased change in DNA level has been found to be a striking feature of maize endosperm growth. I n the central ...
Some notes on premeiocytes in wheat : (premeiotic mitosis, premeiotic interphase, archesporial cell, pollen mother cell)
(University of Missouri, Agricultural Experiment Station, 1983)
Some characteristics of wheat premeiocytes are described as they appear in electron microscopy. These include changes in the endoplasmic reticulum of archesporial cells in premeiotic mitosis (PMM) and some nuclear and ...
Monocot and dicot genes encoding the small subunit ofribulose-1,5-bisphosphate carboxylase : structural analysis and gene expression
(University of Missouri, Agricultural Experiment Station, 1983)
Historical aspects and significance of the discovery of wild wheats : (origin of wheat, evolution, gene pools)
(University of Missouri, Agricultural Experiment Station, 1977)