Summary: Colleges

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  • 1 Lecture 1 - CH1

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  • How can you get genetic improvement of an animal?

    - Artificial selection of the best animals
    - Natural selection
  • How is an animal genetically improved with artificial selection of the best animals?

    - Increase in frequency of favourable alleles
    - Next generation is better than current generation
  • 2 Lecture 2 - CH2

  • How do you determine te traits in a breeding goal?

    Divide them in economic and non-economic
  • What are other aspects to consider in a breeding goal?

    - Ethical aspects
    - Carbon footprint
    - Competitive position of breeding program
  • 3 Lecture 3 - CH4

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  • What is the aim of collecting information?

    - To be able to uniquely identify individuals
    - To get an accurate impression of the performance
  • Why are semen and oocytes not preferred as source of DNA?

    Potentially large differences in DNA between cells due to meiosis
  • What are genetic markers used for?

    - Parentage testing
    - Pedigree reconstruction
    - Estimate biodiversity
    - Estimate breeding value of animals
    - Find genes (and use for genetic testing)
  • 5 Lecture 5 - CH7

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  • What is a heritable disorder?

    - Often monegenic
    - Often recessive inheritance
    - Anything from little or no disomfort to lethal
    - In some cases occur in multiple species
  • What if a recessive disorder is lethal?

    Prenatal mortalilty: no homozygous recessives born
    Occurs fairly often: early abortions, prolonged non-return interval
  • What is the procedure for genome wide studies?

    1 Genotype many parents and their offspring
    2 For very many SNP markers, or even sequence info
    3 Look for absence of one of the homozygotes
    4 Test for deviation from H-W
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