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  2. Test cross - Wikipedia

    en.wikipedia.org/wiki/Test_cross

    Since the homozygous recessive individual can only pass on recessive alleles, the allele the individual in question passes on determines the phenotype of the offspring. [3] Thus, this test yields 2 possible situations: If any of the offspring produced express the recessive trait, the individual in question is heterozygous for the dominant ...

  3. Pedigree chart - Wikipedia

    en.wikipedia.org/wiki/Pedigree_chart

    The word pedigree is a corruption of the Anglo-Norman French pé de grue or "crane's foot", either because the typical lines and split lines (each split leading to different offspring of the one parent line) resemble the thin leg and foot of a crane [3] or because such a mark was used to denote succession in pedigree charts.

  4. Tridimensional Personality Questionnaire - Wikipedia

    en.wikipedia.org/wiki/Tridimensional_Personality...

    These personality traits are novelty seeking, harm avoidance and reward dependence. Each have four subscales. There are 100 true-false questions which form the basis for the computation of the traits. The personality test also exists in Chinese, [2] French [3] and German [4] versions.

  5. Phylogenetic comparative methods - Wikipedia

    en.wikipedia.org/wiki/Phylogenetic_comparative...

    Phylogenetic comparative methods (PCMs) use information on the historical relationships of lineages (phylogenies) to test evolutionary hypotheses.The comparative method has a long history in evolutionary biology; indeed, Charles Darwin used differences and similarities between species as a major source of evidence in The Origin of Species.

  6. Triple bar - Wikipedia

    en.wikipedia.org/wiki/Triple_bar

    Usage of this symbol dates back to the early computer interfaces developed at Xerox PARC in the 1980s. [18] It is also similar to the icon frequently used to indicate justified text alignment . It is an oft-used component of Google's Material Design guidelines and many Android apps and web apps that follow these guidelines make use of the ...

  7. Reciprocal cross - Wikipedia

    en.wikipedia.org/wiki/Reciprocal_cross

    In genetics, a reciprocal cross is a breeding experiment designed to test the role of parental sex on a given inheritance pattern. [1] All parent organisms must be true breeding to properly carry out such an experiment. In one cross, a male expressing the trait of interest will be crossed with a female not expressing the trait.

  8. Item response theory - Wikipedia

    en.wikipedia.org/wiki/Item_response_theory

    The trait is further assumed to be measurable on a scale (the mere existence of a test assumes this), typically set to a standard scale with a mean of 0.0 and a standard deviation of 1.0. Unidimensionality should be interpreted as homogeneity, a quality that should be defined or empirically demonstrated in relation to a given purpose or use ...

  9. Eysenck Personality Questionnaire - Wikipedia

    en.wikipedia.org/wiki/Eysenck_Personality...

    This version has 100 yes/no questions in its full version and 48 yes/no questions in its short scale version. A different approach to personality measurement developed by Eysenck, which distinguishes between different facets of these traits, is the Eysenck Personality Profiler.