Results 101 to 110 of about 2,768 (134)
Extrachromosomal inheritance in Schizosaccharomyces pombe
In contrast to the wild-type, mutant [ANTr8] is able spontaneously to throw off stable respiratory deficient mutants. The frequency of these mutants is considerably enhanced by treatment with ethidium bromide (EB) or the azo-dye Janus green (JG). An unstable cell state with a petite-like phenotype is found in both mutant [ANTr8] and wild-type after EB ...
Klaus Wolf +3 more
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The Role of Extrachromosomal Inheritance in Plant Breeding
Publisher Summary This chapter discusses several mechanisms involved in extrachromosomal inheritance. It is demonstrated that chloroplasts and mitochondria contain their own deoxyribonucleic acid (DNA), with a unique informational content. Consequently, it seems reasonable to assume that many cases of extrachromosomal inheritance involve the genetic ...
Paul Harvey +2 more
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Extrachromosomal inheritance of paromomycin resistance in Saccharomyces cerevisiae
Regina Kutzleb +2 more
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Inheritance of extrachromosomal rDNA in Physarum polycephalum. [PDF]
In the acellular slime mold Physarum polycephalum, the several hundred genes coding for rRNA are located on linear extrachromosomal DNA molecules of a discrete size, 60 kilobases. Each molecule contains two genes that are arranged in a palindromic fashion and separated by a central spacer region. We investigated how rDNA is inherited after meiosis. Two
Patrick Ferris +2 more
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EVIDENCE OF EXTRACHROMOSOMAL INHERITANCE INCHENOPODIUM RUBRUM
A curled-leaf mutation (Cu) was induced in Chenopodium rubrum by diethyl sulphate treatment and reversed in high frequency (21.5%) by X-rays. Nonchromosomal inheritance is demonstrated for the Cu mutation. Evidence for nonchromosomal inheritance is based on mutation frequency; mutagenic specificity, non-Mendelian segregation; and an absence of ...
Beatrice E. Murray, Iris L. Craig
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Spontaneously arising erythromycin-resistant mutants were isolated in the "petite-negative" yeast Kluyveromyces lactis. Two independently arising mutants were studied, in one erythromycin-resistance was conferred by a single dominant nuclear gene, and in the other the resistance was extrachromosomally inherited.
Luigi Del Giudice, Aurora Brunner
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Mature spermatozoa are permeable to foreign DNA and RNA molecules. Here I propose a model, whereby extrachromosomal genetic information, mostly encoded in the form of RNA in somatic cells, can cross the Weismann barrier and reach epididymal spermatozoa.
Corrado Spadafora
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A model of the P-M system of hybrid dysgenesis is presented which incorporates single-site transposition of P factors in M cytotype, determination of offspring cytotype by both maternal cytotype and maternal or offspring nuclear genotype, and strong fertility selection in dysgenic individuals.
Marcy K. Uyenoyama
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