DNA: Archives Reveal Nobel Nominations
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M.S. and Ph.D. Sequences in Neuroscience and Physiology
Neuroscience and Physiology are distinct but overlapping disciplines. • M.S. and Ph.D. students take three core Whereas Neuroscience investigates courses in neuroscience, physiology and neural substrates of behavior, Physiology biostatistics, and elective courses in more studies multiple functions. However, specific areas of these fields, as well as in M.S. and Ph.D. both seek to understand at an integrated related fields, such as cellular and level across molecules, cells, tissues, molecular biology, behavior, chemistry Sequences in whole organism, and environment. and psychology The workings of our brain and body • The curriculum provides a canonical Neuroscience and define us. When problems occur, results conceptual foundation for students can be devastating. According to the pursuing master’s and doctoral research in Physiology National Institutes of Health, neurological neuroscience and physiology and heart disease are two of the largest world health concerns and more than 50 • Our sequences provide a “cohort” million people in this country endure experience for new students, by offering a School of Biological some problem with the nervous system. cohesive curriculum for those students interested in pursuing graduate study in Sciences Our graduate sequences in Neuroscience neuroscience and physiology. and Physiology provide an exciting and Illinois State University challenging academic environment by combining research excellence with a strong commitment to education. We offer a comprehensive curriculum to graduate students interested in Neuroscience and Physiology. Both M.S. For more information, contact Dr. Paul A. and Ph.D. programs are also tightly Garris ([email protected]) or visit integrated into laboratory research. bio.illinoisstate.edu/graduate and goo.gl/9YTs4X Byron Heidenreich, Ph.D. -
Francois Jacob Memorial
RETROSPECTIVE RETROSPECTIVE Francois Jacob memorial Arthur B. Pardee1 Department of Adult Oncology, Dana-Farber Institute, Boston, MA 02115 Dr. Francois Jacob is one of a handful of the DNA would integrate into the bacterial chro- 20th century’smostdistinguishedlifescien- mosome and remain dormant or, at other tists. His research with Dr. Jacques Monod, times, would kill the cell. like that of Watson and Crick, provided the Jacob’s next major contribution, in collab- foundations for understanding mechanisms oration with Dr. Jacques Monod, was to in- of genetic regulation of life processes such vestigate how a gene is regulated. Remark- as cell differentiation and defects in diseases. ably, native E. coli synthesize β-galactosidase Jacob joined the College de France in 1964 only when lactose is available. Some mutated and shared the Nobel Prize in Physiology bacteria can make the enzyme in the absence or Medicine 1965 with Jacques Monod of inducer. Monod’s initial idea was that and Andre Lwoff. He was elected to the these constitutive bacteria activate the gene National Academy of Sciences (NAS) USA by synthesizing an intracellular lactose-like in 1969. inducer molecule. Jacob was born in 1920 in a French Jewish To investigate this model, interrupted family; his grandfather was a four-star gen- mating was applied to bring the β-galactosi- eral. He began to study medicine before dase gene of a donor bacterium into a consti- World War II, in which he served as a mil- tutive receptor. According to the induction itary officer in the Free French Army and was model, the mated cell should produce en- badly wounded in an air raid. -
Insight from the Sociology of Science
CHAPTER 7 INSIGHT FROM THE SOCIOLOGY OF SCIENCE Science is What Scientists Do It has been argued a number of times in previous chapters that empirical adequacy is insufficient, in itself, to establish the validity of a theory: consistency with the observable ‘facts’ does not mean that a theory is true,1 only that it might be true, along with other theories that may also correspond with the observational data. Moreover, empirical inadequacy (theories unable to account for all the ‘facts’ in their domain) is frequently ignored by individual scientists in their fight to establish a new theory or retain an existing one. It has also been argued that because experi- ments are conceived and conducted within a particular theoretical, procedural and instrumental framework, they cannot furnish the theory-free data needed to make empirically-based judgements about the superiority of one theory over another. What counts as relevant evidence is, in part, determined by the theoretical framework the evidence is intended to test. It follows that the rationality of science is rather different from the account we usually provide for students in school. Experiment and observation are not as decisive as we claim. Additional factors that may play a part in theory acceptance include the following: intuition, aesthetic considerations, similarity and consistency among theories, intellectual fashion, social and economic influences, status of the proposer(s), personal motives and opportunism. Although the evidence may be inconclusive, scientists’ intuitive feelings about the plausibility or aptness of particular ideas will make it appear convincing. The history of science includes many accounts of scientists ‘sticking to their guns’ concerning a well-loved theory in the teeth of evidence to the contrary, and some- times in the absence of any evidence at all. -
The Joys and Burdens of Our Heroes 12/05/2021
More Fun Than Fun: The Joys and Burdens of Our Heroes 12/05/2021 An iconic photo of Konrad Lorenz with his favourite geese. Photo: Willamette Biology, CC BY-SA 2.0 This article is part of the ‘More Fun Than Fun‘ column by Prof Raghavendra Gadagkar. He will explore interesting research papers or books and, while placing them in context, make them accessible to a wide readership. RAGHAVENDRA GADAGKAR Among the books I read as a teenager, two completely changed my life. One was The Double Helix by Nobel laureate James D. Watson. This book was inspiring at many levels and instantly got me addicted to molecular biology. The other was King Solomon’s Ring by Konrad Lorenz, soon to be a Nobel laureate. The study of animal behaviour so charmingly and unforgettably described by Lorenz kindled in me an eternal love for the subject. The circumstances in which I read these two books are etched in my mind and may have partly contributed to my enthusiasm for them and their subjects. The Double Helix was first published in London in 1968 when I was a pre-university student (equivalent to 11th grade) at St Joseph’s college in Bangalore and was planning to apply for the prestigious National Science Talent Search Scholarship. By then, I had heard of the discovery of the double-helical structure of DNA and its profound implications. I was also tickled that this momentous discovery was made in 1953, the year of my birth. I saw the announcement of Watson’s book on the notice board in the British Council Library, one of my frequent haunts. -
Discovery of DNA Structure and Function: Watson and Crick By: Leslie A
01/08/2018 Discovery of DNA Double Helix: Watson and Crick | Learn Science at Scitable NUCLEIC ACID STRUCTURE AND FUNCTION | Lead Editor: Bob Moss Discovery of DNA Structure and Function: Watson and Crick By: Leslie A. Pray, Ph.D. © 2008 Nature Education Citation: Pray, L. (2008) Discovery of DNA structure and function: Watson and Crick. Nature Education 1(1):100 The landmark ideas of Watson and Crick relied heavily on the work of other scientists. What did the duo actually discover? Aa Aa Aa Many people believe that American biologist James Watson and English physicist Francis Crick discovered DNA in the 1950s. In reality, this is not the case. Rather, DNA was first identified in the late 1860s by Swiss chemist Friedrich Miescher. Then, in the decades following Miescher's discovery, other scientists--notably, Phoebus Levene and Erwin Chargaff--carried out a series of research efforts that revealed additional details about the DNA molecule, including its primary chemical components and the ways in which they joined with one another. Without the scientific foundation provided by these pioneers, Watson and Crick may never have reached their groundbreaking conclusion of 1953: that the DNA molecule exists in the form of a three-dimensional double helix. The First Piece of the Puzzle: Miescher Discovers DNA Although few people realize it, 1869 was a landmark year in genetic research, because it was the year in which Swiss physiological chemist Friedrich Miescher first identified what he called "nuclein" inside the nuclei of human white blood cells. (The term "nuclein" was later changed to "nucleic acid" and eventually to "deoxyribonucleic acid," or "DNA.") Miescher's plan was to isolate and characterize not the nuclein (which nobody at that time realized existed) but instead the protein components of leukocytes (white blood cells). -
Cambridge's 92 Nobel Prize Winners Part 2 - 1951 to 1974: from Crick and Watson to Dorothy Hodgkin
Cambridge's 92 Nobel Prize winners part 2 - 1951 to 1974: from Crick and Watson to Dorothy Hodgkin By Cambridge News | Posted: January 18, 2016 By Adam Care The News has been rounding up all of Cambridge's 92 Nobel Laureates, celebrating over 100 years of scientific and social innovation. ADVERTISING In this installment we move from 1951 to 1974, a period which saw a host of dramatic breakthroughs, in biology, atomic science, the discovery of pulsars and theories of global trade. It's also a period which saw The Eagle pub come to national prominence and the appearance of the first female name in Cambridge University's long Nobel history. The Gender Pay Gap Sale! Shop Online to get 13.9% off From 8 - 11 March, get 13.9% off 1,000s of items, it highlights the pay gap between men & women in the UK. Shop the Gender Pay Gap Sale – now. Promoted by Oxfam 1. 1951 Ernest Walton, Trinity College: Nobel Prize in Physics, for using accelerated particles to study atomic nuclei 2. 1951 John Cockcroft, St John's / Churchill Colleges: Nobel Prize in Physics, for using accelerated particles to study atomic nuclei Walton and Cockcroft shared the 1951 physics prize after they famously 'split the atom' in Cambridge 1932, ushering in the nuclear age with their particle accelerator, the Cockcroft-Walton generator. In later years Walton returned to his native Ireland, as a fellow of Trinity College Dublin, while in 1951 Cockcroft became the first master of Churchill College, where he died 16 years later. 3. 1952 Archer Martin, Peterhouse: Nobel Prize in Chemistry, for developing partition chromatography 4. -
Introduction and Historical Perspective
Chapter 1 Introduction and Historical Perspective “ Nothing in biology makes sense except in the light of evolution. ” modified by the developmental history of the organism, Theodosius Dobzhansky its physiology – from cellular to systems levels – and by the social and physical environment. Finally, behaviors are shaped through evolutionary forces of natural selection OVERVIEW that optimize survival and reproduction ( Figure 1.1 ). Truly, the study of behavior provides us with a window through Behavioral genetics aims to understand the genetic which we can view much of biology. mechanisms that enable the nervous system to direct Understanding behaviors requires a multidisciplinary appropriate interactions between organisms and their perspective, with regulation of gene expression at its core. social and physical environments. Early scientific The emerging field of behavioral genetics is still taking explorations of animal behavior defined the fields shape and its boundaries are still being defined. Behavioral of experimental psychology and classical ethology. genetics has evolved through the merger of experimental Behavioral genetics has emerged as an interdisciplin- psychology and classical ethology with evolutionary biol- ary science at the interface of experimental psychology, ogy and genetics, and also incorporates aspects of neuro- classical ethology, genetics, and neuroscience. This science ( Figure 1.2 ). To gain a perspective on the current chapter provides a brief overview of the emergence of definition of this field, it is helpful -
Quiet Debut'' of the Double Helix: a Bibliometric and Methodological
Journal of the History of Biology Ó Springer 2009 DOI 10.1007/s10739-009-9183-2 Revisiting the ‘‘Quiet Debut’’ of the Double Helix: A Bibliometric and Methodological note on the ‘‘Impact’’ of Scientific Publications YVES GINGRAS De´partement d’histoire Universite´ du Que´bec a` Montre´al C.P. 8888, Suc. Centre-Ville Montreal, QC H3C-3P8 Canada E-mail: [email protected] Abstract. The object of this paper is two-fold: first, to show that contrary to what seem to have become a widely accepted view among historians of biology, the famous 1953 first Nature paper of Watson and Crick on the structure of DNA was widely cited – as compared to the average paper of the time – on a continuous basis from the very year of its publication and over the period 1953–1970 and that the citations came from a wide array of scientific journals. A systematic analysis of the bibliometric data thus shows that Watson’s and Crick’s paper did in fact have immediate and long term impact if we define ‘‘impact’’ in terms of comparative citations with other papers of the time. In this precise sense it did not fall into ‘‘relative oblivion’’ in the scientific community. The second aim of this paper is to show, using the case of the reception of the Watson–Crick and Jacob–Monod papers as concrete examples, how large scale bibliometric data can be used in a sophisticated manner to provide information about the dynamic of the scientific field as a whole instead of limiting the analysis to a few major actors and generalizing the result to the whole community without further ado. -
Barbara Mcclintock's World
Barbara McClintock’s World Timeline adapted from Dolan DNA Learning Center exhibition 1902-1908 Barbara McClintock is born in Hartford, Connecticut, the third of four children of Sarah and Thomas Henry McClintock, a physician. She spends periods of her childhood in Massachusetts with her paternal aunt and uncle. Barbara at about age five. This prim and proper picture betrays the fact that she was, in fact, a self-reliant tomboy. Barbara’s individualism and self-sufficiency was apparent even in infancy. When Barbara was four months old, her parents changed her birth name, Eleanor, which they considered too delicate and feminine for such a rugged child. In grade school, Barbara persuaded her mother to have matching bloomers (shorts) made for her dresses – so she could more easily join her brother Tom in tree climbing, baseball, volleyball, My father tells me that at the and football. age of five I asked for a set of tools. He My mother used to did not get me the tools that you get for an adult; he put a pillow on the floor and give got me tools that would fit in my hands, and I didn’t me one toy and just leave me there. think they were adequate. Though I didn’t want to tell She said I didn’t cry, didn’t call for him that, they were not the tools I wanted. I wanted anything. real tools not tools for children. 1908-1918 McClintock’s family moves to Brooklyn in 1908, where she attends elementary and secondary school. In 1918, she graduates one semester early from Erasmus Hall High School in Brooklyn. -
I. Hox Genes 2
School ofMedicine Oregon Health Sciences University CERTIFICATE OF APPROVAL This is certify that the Ph.D. thesis of WendyKnosp has been approved Mentor/ Advisor ~ Member Member QUANTITATIVE ANALYSIS OF HOXA13 FUNCTION IN THE DEVELOPING LIMB By Wendy M. lt<nosp A DISSERTATION Presented to the Department of Molecular and Medical Genetics and the Oregon Health & Science University School of Medicine in partial fulfillment of the requirements for the degree of Doctor of Philosophy August 2006 TABLE OF CONTENTS LIST OF FIGURES iv LIST OF ABBREVIATIONS vii ACKNOWLEDGEMENTS X ABSTRACT xii CHAPTER 1: Introduction 1 I. Hox genes 2 A. Discovery of Hox genes in Drosophila melanogaster 2 B. Hox cluster colinearity and conservation 7 C. Human Hox mutations 9 D. Hoxa13: HFGS and Guttmacher syndromes 10 II. The Homeodomain 12 A. Homeodomain structure 12 B. DNA binding 14 Ill. Limb development 16 A. Patterning of the limb axes 16 B. Digit formation 20 C. lnterdigital programmed cell death 21 IV. BMPs and limb development 23 A. BMP signaling in the limb 23 B. BMP target genes 27 V. Hoxa13 and embryonic development 30 A. The Hoxa13-GFP mouse model 30 B. Hoxa13 mutant phenotypes 34 C. HOXA 13 homeodomain 35 D. HOXA 13 protein-protein interactions 36 E. HOXA 13 target genes 37 VI. Hypothesis and Rationale 39 CHAPTER 2: HOXA13 regulates Bmp2 and Bmp7 40 I. Abstract 42 II. Introduction 43 Ill. Results 46 IV. Discussion 69 v. Materials and Methods 75 VI. Acknowledgements 83 11 CHAPTER 3: Quantitative analysis of HOXA13 function 84 HOXA 13 regulation of Sostdc1 I. -
The Contributions of George Beadle and Edward Tatum
| PERSPECTIVES Biochemical Genetics and Molecular Biology: The Contributions of George Beadle and Edward Tatum Bernard S. Strauss1 Department of Molecular Genetics and Cell Biology, The University of Chicago, Chicago, Illinois 60637 KEYWORDS George Beadle; Edward Tatum; Boris Ephrussi; gene action; history It will concern us particularly to take note of those cases in Genetics in the Early 1940s which men not only solved a problem but had to alter their mentality in the process, or at least discovered afterwards By the end of the 1930s, geneticists had developed a sophis- that the solution involved a change in their mental approach ticated, self-contained science. In particular, they were able (Butterfield 1962). to predict the patterns of inheritance of a variety of charac- teristics, most morphological in nature, in a variety of or- EVENTY-FIVE years ago, George Beadle and Edward ganisms although the favorites at the time were clearly Tatum published their method for producing nutritional S Drosophila andcorn(Zea mays). These characteristics were mutants in Neurospora crassa. Their study signaled the start of determined by mysterious entities known as “genes,” known a new era in experimental biology, but its significance is to be located at particular positions on the chromosomes. generally misunderstood today. The importance of the work Furthermore, a variety of peculiar patterns of inheritance is usually summarized as providing support for the “one gene– could be accounted for by alteration in chromosome struc- one enzyme” hypothesis, but its major value actually lay both ture and number with predictions as to inheritance pattern in providing a general methodology for the investigation of being quantitative and statistical. -
Genes, Genomes and Genetic Analysis
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