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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 ...
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 ...
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)
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 ...
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 ...
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 ...
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 ...
The mechanism and control of Tn5 transposition
(University of Missouri, Agricultural Experiment Station, 1982)
Analyses of transposition from pBR322
Chromatin structure of eukaryotic genes : DNase I hypersensitive sites
(University of Missouri, Agricultural Experiment Station, 1982)
We have recently learned much about the organization of the eukaryotic genome by using nucleases as probes of the protein - DNA interactions of chromatin. In this paper we review the available information from our laboratory ...
Chi sites, RecBC enzyme, and geneneralized recombination
(University of Missouri, Agricultural Experiment Station, 1981)
With the goal of elucidating the molecular basis of genetic recombination, our laboratory has studied special sites that promote recombination in their neighborhood and enzymes essential for recombination in Escherichia ...
Nuclear genes and chloroplast modifications in maize : (Zea mays, iojap , cytoplasmic inheritance, nucleus-cytoplasm interaction, sorting-out, morphological modifications)
(University of Missouri, Agricultural Experiment Station, 1982)
The recessive nuclear genes (ij) and chloroplast mutator (cm) in maize have been studied as examples of genes whose roles affect the continuity of the plastid and its genetic machinery. The phenotypic expression of cm is ...
A molecular analysis of three unstable alleles in drosophila : (transposable elements, mutable alleles, white locus)
(University of Missouri, Agricultural Experiment Station, 1982)
We have determined the structure of several unstable mutant alleles of the white locus in Drosophila melanogaster. The white ivory (w[superscript i]) allele is a moderately unstable allele, which gave rise to the highly ...
Nuclear control of the expression of the cytochrome b gene in yeast mitochondrial DNA : (apocytochrome b gene, Saccharomyces cerevisiae, CBP1 gene)
(University of Missouri, Agricultural Experiment Station, 1982)
The mitochondrial gene encoding apocytochrome b is mosaic, containing two intervening sequences in the Saccharomyces cerevisiae strain D273-10B. Five nuclear genes and one mitochondrial gene have been identified that are ...
Meiotic mutants in potato breeding : (haploids, 2n gametes, germplasm transfer)
(University of Missouri, Agricultural Experiment Station, 1982)
Three factors provide unusual opportunities for potato improvement: (1) The wild and cultivated tuber-bearing relatives of the potato represent a large source of valuable germplasm. This genetic diversity can be incorporated ...
Bacteriophage 16-3 of Rhizobium meliloti and its pattern of recombination : (Rhizobium, phage - vector, recombination)
(University of Missouri, Agricultural Experiment Station, 1982)
The ontogenetic and evolutionary origins of antibody diversity : (antibody diversity, ontogeny, evolution, transposable elements)
(University of Missouri, Agricultural Experiment Station, 1982)
Three ontogenetic origins of antibody diversity have been identified. First, there is a large number of germline gene segments. Second, multiple combinatorial strategies are used to amplify antibody diversity. These include ...
Pattern formation in the drosophila embryo : (Developmental genetics, combinatorial code, compartments)
(University of Missouri, Agricultural Experiment Station, 1981)
Three plausible hypotheses about developmental commitments in the Drosophila embryo propose: 1) A micromosaic of localized determinants in the egg trigger somatic commitments. 2) Monotonic anterior-posterior and dorsal-ventral ...
Characteristics of cms-S reveversion to male fertility in maize : (cytoplasmic male sterility, male fertility restoration S-type cytoplasm, mitochondrial DNA)
(University of Missouri, Agricultural Experiment Station, 1981)
The association of cytoplasmic reversion of cms-S male-sterile strains to male fertility with disappearance of the S1 and S2 mtDNA plasmids as discrete molecules has been established for all 23 cytoplasmic revertant strains ...
Transposable elements and genetic instabilities in crop plants : (controlling elements, recurrent mutations, hybrid dysgenesis, somatic mutations, tissue culture)
(University of Missouri, Agricultural Experiment Station, 1981)
Transposable elements have long been associated with certain unstable loci in maize and have been intensively studied by McClintock and others. It is known that a transposable element can control the expression of the ...