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Chi-square analysis of crosses Knowledge-Based Practice

Biology · Heredity · Biology · Non-Mendelian Genetics

1 Biology practice questions on Chi-square analysis of crosses. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    A cross between two heterozygous pink-flowered plants displaying incomplete dominance yields 45 red, 110 pink, and 45 white offspring. What is the calculated chi-square (χ2\chi^2) value to test whether these observed counts fit the expected 1:2:1 phenotypic ratio?

    • A) 0.5
    • B) 1.0
    • C) 1.5
    • D) 2.0

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