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Summary Twin Research In Psychology

Course
- Twin Research in Psychology
- van Bergen
- 2020 - 2021
- Vrije Universiteit Amsterdam
- Gezondheid en Leven
561 Flashcards & Notes
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A snapshot of the summary - Twin Research in Psychology

  • Lecture 1A: Historical perspective & Mendel

    This is a preview. There are 56 more flashcards available for chapter 27/10/2020
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  • Which childhood psychopathology is the most heritable?
    ADHD
  • Do genes en environment always play a rol in complex traits?
    Yes
  • What is the liability-threshold model?
    A model that assumes that dichotomous disorders are due to underlying genetic liabilities that are normally distributed. The disorder appears only when a threshold of liability is exceeded.
  • What did Carl linnaeus?
    He created a system that systematically categorize the different species he saw.
  • What causes color blindness?
    Color blindness is caused by a recessive allele on the X chromosome. Males only have one X chromosome, so if they have one allele for color blindness on their single X chromosome, they are color blind. For females the allele must be on both of their X chromosomes.
  • Explain Mendel's First law: The law of segregation.
    A recessive element is expressed only if both elements are recessive. While a dominant element is expressed when one or two are present.
  • What is the definition of Mendelian disorders?
    Disorders that follow the Mendelian inheritance patterns.
  • What are qualitative traits?
    Traits that are influenced by a single gene. These traits follow a simple pattern of inheritance and the phenotypes have distinct categories (present/absent). Traits expression is unaffected by the environment.
  • What is the Huntington's desease?
    An inherited brain disorder causing very fast worsening of the physical, cognitive and emotional self. The risk of HD in the offspring is 50% due to one dominant allele. 
    No cure and effective treatment. 

    Develops relatively old
  • For which cases the 2nd Mendel's law applies?
    1. For genes on different chromosomes
    2. For genes that are far apart on the same chromosome.

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