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Tool 1
Tool 1

... sequence places them in epidemiologically relevant groups and that it can therefore be used for typing. Typically applying the method will mean amplifying this particular DNA region by PCR and analysing the DNA in various ways; one choice being to simply sequence the area (i.e. determine the exact o ...
Section A: Eukaryotic Chromatin Structure
Section A: Eukaryotic Chromatin Structure

... 1. Chromatin structure is based on successive levels of DNA packing • While the single circular chromosome of bacteria is coiled and looped in a complex, but orderly manner, eukaryotic chromatin is far more complex. • Eukaryotic DNA is precisely combined with large amounts of protein. • During inte ...
Gene therapy activity
Gene therapy activity

... You will need Flash Player to run this activity. There are sound effects with this activity, so if you’re in a lab, use headphones. (The sound effects make this a lot more fun, too.) Type into this document as you proceed through the activity. Tools of the Trade First, go to the Tools of the Trade a ...
Gene medication or genetic modification? The devil is in the details
Gene medication or genetic modification? The devil is in the details

... Injection of genetic material into testes is now being explored as a new method for genetically modifying animals1. In the annex list, this method is covered under “techniques involving the direct introduction into an organism of heritable material prepared outside the organism including micro-injec ...
In birds, the male is the homogametic sex
In birds, the male is the homogametic sex

... d. __________ Two genetically distinct populations of cells in a single individual e. __________ Will result in abnormal gamete formation (more than one answer) f. __________ Involved in familial Down syndrome g. __________ Lethal if it occurs in the same region of two homologous chromosomes ...
understanding and applying genetic tests
understanding and applying genetic tests

... found in cells. Chromosomes are the vectors of heredity. There are two types of chromosomes: autosomes and sex chromosomes. Human cells have 22 different types of autosomes, each present as two copies, and two sex chromosomes. This gives 46 chromosomes in total. Dogs have a total of 78 chromosomes ( ...
Blueprint of Life notes
Blueprint of Life notes

... within each separate population, different mutations occur, and therefore, different variations are produced natural selection acts differently on each isolated population, as there are different environmental conditions and selections pressures over time the populations differ so much that they no ...
Biology 6 Practice Genetics Problems (chapter 15)
Biology 6 Practice Genetics Problems (chapter 15)

... chromosomes in gametes and 50% parental chromosomes (as revealed by a test cross). This would be the case only if the genetic loci are at opposite ends of a chromosome, which produces the same basic outcome as with unlinked genes (50% parental genotypes, 50% recombinant genotypes). If recombination ...
Nucleic Acid Biotechnology Techniques
Nucleic Acid Biotechnology Techniques

... growing bacterial colonies contain the plasmid of interest ...
Human Nondisjunction and Mouse Models in Down Syndrome
Human Nondisjunction and Mouse Models in Down Syndrome

... specific genes with specific aspects of DS. These are developed from the assessment of persons with segmental trisomy involving only a portion of human chromosome 21 (HSA21). The smallest chromosomal region in common among individuals who share a given feature is referred to as a “Down’s syndrome cr ...
Characteristics of linked genes
Characteristics of linked genes

... 41.5% GRAY body/Normal wings 41.5% BLACK body/small wings 8.5% GRAY body/Small wings 8.5% BLACK body/Normal wings MORGAN’s Conclusion The genes for wing size and body color were so commonly inherited as only two combinations either gray body/normal wing or black body/small wing that they had to be … ...
Review! Part 3 Cell cycle Order of events in cell growth and division
Review! Part 3 Cell cycle Order of events in cell growth and division

...  Is a pattern responsible for mant features that seem simple on the surface  Traits are usally quantifed by measurement rather than counting  2 ore more gene pairs contribute to the phonotype  Phenotypic expression of polygenic traits varies over a wide range o Pleiotrophy  A single gene on mor ...
Chromosome Mutations
Chromosome Mutations

...  There are two ways in which DNA can become mutated:  Mutations can be inherited.  Parent to child ...
What is the relationship between genes and chromosomes
What is the relationship between genes and chromosomes

... a. For each inherited trait, an individual has two copies of a gene, one from each parent. b. Offspring generally inherit the worst combination of traits from their parents, suggesting that bad breath, quick tempers, smelly feet, and poor math skills are dominant traits. c. There are alternative ver ...
Notification: “Statement of activity with biological agents
Notification: “Statement of activity with biological agents

... - The experiment involves the cloning of known oncogenes, total DNA or more than half of the genome of biological agents from biosafely level 3 or 4. - Cloning experiments in animal, human or plant pathogens (from biosafety level 2 or higher). - The experiment is performed in large scale (more than ...
CSM 101 Fall 2010 Timeline
CSM 101 Fall 2010 Timeline

... g. Centromere- The central region that joins two sister chromatids h. Centrosome- The microtubule organizing center present in the cytoplasm i. Homologous Chromosomes- Chromosomes that possess genes coding for the same traits at the same loci. One chromosome is inherited from the father, one from th ...
CSM 101 Fall 2010 Timeline
CSM 101 Fall 2010 Timeline

... g. Centromere- The central region that joins two sister chromatids h. Centrosome- The microtubule organizing center present in the cytoplasm i. Homologous Chromosomes- Chromosomes that possess genes coding for the same traits at the same loci. One chromosome is inherited from the father, one from th ...
Early Stages of brain development
Early Stages of brain development

... 3) Cell differentiation (as a consequence of induction) 4) Growth & changes in body/organ shape 5) Activity-dependent adjustment of structure and function, compensation of small developmental anomalies ...
Bombay Phenotype
Bombay Phenotype

... Bombay Phenotype & Epistasis • Many traits characterized by a distinct phenotype are affected by more than one gene • Epistasis occurs when one gene masks the effect of another gene or when two gene pairs complement each other such that one dominant allele is required at each locus to express a cer ...
BioSc 231 Exam1 2003
BioSc 231 Exam1 2003

... _____ Which of the following processes occurs in meiosis but not mitosis? A. cell division B. Separation of homologous chromosomes to opposite poles C. Chromatic formation D. Chromosome condensation (shortening) _____ The end result of meiosis is A. two cells with the exact same chromosome compleme ...
New mutations causing congenital myopathies
New mutations causing congenital myopathies

... the mutations, although recessive were still able to cause disease when only one copy was present. Generally, if a mutation is recessive, you need to have two mutated copies of the gene before the disease manifests. The researchers found that in those affected individuals who had inherited one norma ...
aging
aging

... Telomerase = RNA primer 5'-CCCTAA-3' + RT enzyme (elongates the Grich 3'end) + another protein component. Telomerase is a ribonucleoprotein that uses its internal RNA component as a template for the synthesis of DNA on the ends of chromosomes during cell replication. In mammals, telomerase is norma ...
Dominant Inheritance Recessive Inheritance X
Dominant Inheritance Recessive Inheritance X

... condition. For each child, regardless of their sex, the risk is the same = 50%. In some dominant conditions, it is possible to inherit an altered gene without showing any symptoms of the condition. Even within a family, some individuals may be affected by the same dominant condition in different way ...
Biomedical Research
Biomedical Research

... Fruit fly mutants have been studied for nearly 100 years. Fly labs have used phenotypes and genetic crosses to characterize 2,500 genes. The fruit fly has 2 large chromosomes that account for 80% of the genome as well as 2 small chromosomes (including sex). Although the fly genome is 180 Mb, 1/3 of ...
ppt
ppt

... (sperm and egg cells) can be passed down to a person’s children, but might not affect the parent -Mutations in body cells cannot be passed on to your children, however, they can cause cancer or other problems ...
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Site-specific recombinase technology



Nearly every human gene has a counterpart in the mouse (regardless of the fact that a minor set of orthologues had to follow species specific selection routes). This made the mouse the major model for elucidating the ways in which our genetic material encodes information. In the late 1980s gene targeting in murine embryonic stem (ES-)cells enabled the transmission of mutations into the mouse germ line and emerged as a novel option to study the genetic basis of regulatory networks as they exist in the genome. Still, classical gene targeting proved to be limited in several ways as gene functions became irreversibly destroyed by the marker gene that had to be introduced for selecting recombinant ES cells. These early steps led to animals in which the mutation was present in all cells of the body from the beginning leading to complex phenotypes and/or early lethality. There was a clear need for methods to restrict these mutations to specific points in development and specific cell types. This dream became reality when groups in the USA were able to introduce bacteriophage and yeast-derived site-specific recombination (SSR-) systems into mammalian cells as well as into the mouse
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