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The Evidence of Creighton and McClintock. In 1932, the geneticists Harriet Creighton and Barbara McClintock provided an elegant demonstration that the recombination of genes linked on a chromosome requires the physical exchange of segments of the chromosome with its homologous partner. During their studies of linkage in corn, they developed a ...
Mar 15, 2018 · Kass L.B., Birchler J.A. (2014). Setting up a prepared mind: Summary and analysis of “Cytological observations of deficiencies involving known genes, translocations and an inversion in Zea mays. In Perspectives on Nobel Laureate Barbara McClintock's Publications (1926–1984): A Companion Volume, L. Kass, ed (The Internet-First University Press).
Erasmus Hall High School, Brooklyn, New York. From Les Prix Nobel. The Nobel Prizes 1983, Editor Wilhelm Odelberg, [Nobel Foundation], Stockholm, 1984. This autobiography/biography was written at the time of the award and later published in the book series Les Prix Nobel/ Nobel Lectures / The Nobel Prizes.
Aug 1, 2003 · Creighton and McClintock’s experiments in corn provided the first cytological proof for the genetic theory that linked genes on paired chromosomes did exchange places from one homolog to the other. Creighton re-called that Morgan knew that Curt Stern was close to solving this problem using Drosophila.
Paul Chomet. 4253 Accesses. 1 Citations. Barbara McClintock, pioneering plant geneticist and winner of the Nobel Prize in Physiology or Medicine in 1983, is best known for her discovery of transposable genetic elements in corn. This chapter provides an overview of many of her key findings, some of which have been outlined and described elsewhere.
Dec 11, 2012 · Additional experiments with the Ds locus revealed that chromosome breakage at this locus required a second dominant locus, which could also initiate its own transposition. McClintock named this locus Activator, or Ac, and found that Ds chromosome breakage could be activated by an Ac element at a different site or even on a different chromosome.
May 14, 2022 · Creighton and McClintock found the latter, thus indicating that the gene locus for wx was associated with (and thus near) the end of the chromosome with the extra segment. The gene locus for kernel color must then be neared the end with the knob. Examination of the plants in class 4 (colored kernels and normal endosperm) revealed a chromosome ...
