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Codominance Knowledge-Based Practice

Biology · Heredity · Biology · Non-Mendelian Genetics

1 Biology practice questions on Codominance. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    In cattle, coat color exhibits codominance where homozygous individuals are either red (CRCR) or white (CWCW), and heterozygous individuals are roan (CRCW). What is the expected phenotypic ratio among the offspring resulting from a cross between two roan cattle?

    • A) 1 red : 2 roan : 1 white
    • B) 3 red : 1 white
    • C) 1 red : 1 white
    • D) 3 roan : 1 white

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