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Nondisjunction, Genetic: The failure of homologous Chromosomes or Chromatids to segregate during Mitosis or Meiosis with the result that one daughter cell has both of a pair of parental chromosomes or chromatids and the other has none.

C. elegans Development and Reproduction

JoVE 5110

Ceanorhabditis elegans is a powerful tool to help understand how organisms develop from a single cell into a vast interconnected array of functioning tissues. Early work in C. elegans traced the complete cell lineage and structure at the electron microscopy level, allowing researchers unprecedented insight into the connection between genes, development and disease. Appreciating the stereotyped development and reproductive program of C. elegans is essential to using this model organism to its experimental fullest. This video will give you a peek into the development of a worm from fertilization to hatching, and walk you though the life stages of the newly hatched larvae on its journey to reproductive maturity. The video will detail how the major axes are established, which founder cells give rise to what tissues in the developing embryo and how to discriminate between the four larval stages. Finally, you will learn how to set up a genetic cross and we"ll visit a few applications that manipulate the development and reproduction of C. elegans to experimental benefit.


 Biology I

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The C. elegans Excretory Canal as a Model for Intracellular Lumen Morphogenesis and In Vivo Polarized Membrane Biogenesis in a Single Cell: labeling by GFP-fusions, RNAi Interaction Screen and Imaging

1Mucosal Immunology and Biology Research Center, Developmental Biology and Genetics Core, Massachusetts General Hospital for Children, Harvard Medical School, 2College of Life Sciences, Jilin University, 3Faculty of Health Sciences, University of Macau

JoVE 56101


 Developmental Biology

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The C. elegans Intestine As a Model for Intercellular Lumen Morphogenesis and In Vivo Polarized Membrane Biogenesis at the Single-cell Level: Labeling by Antibody Staining, RNAi Loss-of-function Analysis and Imaging

1Mucosal Immunology and Biology Research Center, Developmental Biology and Genetics Core, Massachusetts General Hospital, Harvard Medical School, 2College of Life Sciences, Jilin University, 3Faculty of Health Sciences, University of Macau

JoVE 56100


 Developmental Biology

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Modeling Astrocytoma Pathogenesis In Vitro and In Vivo Using Cortical Astrocytes or Neural Stem Cells from Conditional, Genetically Engineered Mice

1Department of Pathology and Laboratory Medicine, University of North Carolina School of Medicine, 2Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, 3Division of Neuropathology, Department of Pathology and Laboratory Medicine, University of North Carolina School of Medicine, 4Curriculum in Genetics and Molecular Biology, University of North Carolina School of Medicine, 5Biological and Biomedical Sciences Program, University of North Carolina School of Medicine, 6Department of Radiation Oncology, Emory University School of Medicine, 7Department of Neurology, Neurosciences Center, University of North Carolina School of Medicine

JoVE 51763


 Neuroscience

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Genetic Engineering of an Unconventional Yeast for Renewable Biofuel and Biochemical Production

1Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, 2NUS Synthetic Biology for Clinical and Technological Innovation (SynCTI), Life Sciences Institute, National University of Singapore, 3Food Science and Chemical Engineering, Singapore Institute of Technology

JoVE 54371


 Genetics

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Genetic Manipulation of the Plant Pathogen Ustilago maydis to Study Fungal Biology and Plant Microbe Interactions

1Institute for Microbiology, Heinrich-Heine University Düsseldorf, 2Bioeconomy Science Center (BioSC), 3Department of Genetics, Institute of Applied Biosciences, Karlsruhe Institute of Technology, 4Cluster of Excellence in Plant Sciences (CEPLAS), Heinrich-Heine University Düsseldorf

JoVE 54522


 Genetics

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Two Algorithms for High-throughput and Multi-parametric Quantification of Drosophila Neuromuscular Junction Morphology

1Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, 2Microscopical Imaging Centre (MIC), Radboud University Medical Center, 3Department of Biology, Universidad Autónoma de Madrid, 4Department of Clinical and Experimental Medicine, Linköping University, 5Department of Pathology, Radboud University Medical Center

JoVE 55395


 Neuroscience

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Recording Mouse Ultrasonic Vocalizations to Evaluate Social Communication

1Human Genetics and Cognitive Functions, University Paris Diderot, CNRS UMR 3571, Institut Pasteur, 2Neurophysiology and Behavior, University Pierre et Marie Curie Paris 6, CNRS UMR 7102, 3Bio Image Analysis, CNRS URA 2582, Institut Pasteur

JoVE 53871


 Behavior

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Screening for Functional Non-coding Genetic Variants Using Electrophoretic Mobility Shift Assay (EMSA) and DNA-affinity Precipitation Assay (DAPA)

1Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital, 2Medical Scientist Training Program, University of Cincinnati, 3Immunology Graduate Program, University of Cincinnati, 4Divisions of Biomedical Informatics and Developmental Biology, Cincinnati Children's Hospital

JoVE 54093


 Biology

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Quantification of Information Encoded by Gene Expression Levels During Lifespan Modulation Under Broad-range Dietary Restriction in C. elegans

1Centre for Developmental Neurobiology, King's College London, 2Interdisciplinary Bioengineering Graduate Program, Georgia Institute of Technology, 3Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, 4School of Chemical & Biomolecular Engineering, Georgia Institute of Technology

JoVE 56292


 Genetics

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Building Up a High-throughput Screening Platform to Assess the Heterogeneity of HER2 Gene Amplification in Breast Cancers

1Division of Pathology, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, 2School of Medicine, University of Milan, 3School of Biology, University of Pavia, 4Division of Breast Surgery, Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, 5Division of Medical Oncology, Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, 6Department of Biomedical, Surgical, and Dental Sciences, University of Milan

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JoVE 56686


 JoVE In-Press

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Genome-Wide RNAi Screening to Identify Host Factors That Modulate Oncolytic Virus Therapy

1Children's Hospital of Eastern Ontario (CHEO) Research Institute, 2Department of Biology, Microbiology and Immunology, University of Ottawa, 3Department of Pediatrics, University of Ottawa, 4Department of Microbiology, Immunology and Infectious Diseases, Cumming School of Medicine, University of Calgary

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JoVE 56913


 JoVE In-Press

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Techniques for the Evolution of Robust Pentose-fermenting Yeast for Bioconversion of Lignocellulose to Ethanol

1Bioenergy Research Unit, National Center for Agricultural Utilization Research, 2Mycotoxin Prevention and Applied Microbiology Research Unit, National Center for Agricultural Utilization Research, 3Chemical Engineering and Material Science, Great Lakes Bioenergy Center, Michigan State University

JoVE 54227


 Bioengineering

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Evaluation of Vascular Control Mechanisms Utilizing Video Microscopy of Isolated Resistance Arteries of Rats

1Department of Physical Therapy, Marquette University, 2Medical College of Wisconsin, 3Department of Physiology, Medical College of Wisconsin, 4Graduate Programs of Nurse Anesthesia, Texas Wesleyan University, 5Office of Research, Medical College of Wisconsin

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JoVE 56133


 JoVE In-Press

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High-throughput Analysis of Locomotor Behavior in the Drosophila Island Assay

1Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, 2Centre for Molecular and Biomolecular Informatics, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 3Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center

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JoVE 55892


 JoVE In-Press

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Chitosan/Interfering RNA Nanoparticle Mediated Gene Silencing in Disease Vector Mosquito Larvae

1Division of Biology, Kansas State University, 2Department of Medical and Molecular Genetics, Indiana University School of Medicine, 3Eck Institute for Global Health, University of Notre Dame, 4Department of Biological Sciences, University of Notre Dame, 5Department of Entomology, Kansas State University

JoVE 52523


 Biology

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