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Chi Square Analysis definitions

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  • Chi Square Test
    Statistical method comparing actual genetic results to predicted ratios, assessing closeness to Mendelian expectations.
  • Observed Numbers
    Experimental counts directly obtained from genetic crosses, reflecting real outcomes rather than predictions.
  • Expected Numbers
    Predicted counts based on theoretical genetic ratios, such as those derived from Punnett Squares.
  • Mendelian Ratios
    Proportions predicted by Mendel’s laws, like 3:1 or 9:3:3:1, serving as benchmarks for genetic experiments.
  • Statistical Test
    Mathematical procedure used to evaluate if experimental data aligns with theoretical predictions.
  • Genetic Variability
    Natural differences in genetic outcomes causing deviations from perfect ratios in offspring.
  • Formula
    Mathematical expression summing squared differences between observed and expected values, divided by expected.
  • Punnett Square
    Diagrammatic tool predicting expected genetic ratios from parental genotypes.
  • Inheritance Patterns
    Trends in how traits are transmitted across generations, often validated by statistical analysis.
  • Offspring Ratios
    Proportions of different phenotypes or genotypes among progeny in a genetic cross.
  • Summation
    Mathematical operation indicated by the sigma symbol, representing the addition of multiple terms.
  • Notation
    Symbols and letters used to represent variables and operations in the Chi Square formula.