Genetics Practice Problem: Incomplete Dominance
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Questions and Answers

What is the result of crossing a homozygous red flower with a homozygous white flower in snapdragons and four o'clocks?

  • A homozygous red flower
  • A heterozygous pink flower (correct)
  • A homozygous white flower
  • A heterozygous red flower
  • What is the term used to describe the phenomenon where the alleles blend together to produce a phenotype that is in between the phenotypes of the parents?

  • Recessive
  • Dominance
  • Incomplete Dominance (correct)
  • Codominance
  • What is the genotype of a heterozygous pink flower in snapdragons and four o'clocks?

  • WW
  • WR
  • RW (correct)
  • RR
  • What is the expected outcome of crossing two pink flowering plants?

    <p>A mixture of red, white, and pink flowers</p> Signup and view all the answers

    What is the genotype of the parents in the cross between a pure-breeding white radish plant and a purebreeding red radish plant?

    <p>WW and RR</p> Signup and view all the answers

    What is the term used to describe a gene that has three or more alleles in a population?

    <p>Multiple alleles</p> Signup and view all the answers

    What is the order of dominance for the coat color alleles in rabbits?

    <p>C &gt; ch &gt; cch &gt; c</p> Signup and view all the answers

    What is the phenotype of a rabbit with the genotype 'CC'?

    <p>Full color (wild type or agouti)</p> Signup and view all the answers

    What type of inheritance is demonstrated by the coat color alleles in rabbits?

    <p>Dominance hierarchy</p> Signup and view all the answers

    What is the term used to describe the interaction between two alleles where neither is dominant?

    <p>Incomplete dominance</p> Signup and view all the answers

    What type of dominance is exhibited in the flower color of the plant?

    <p>Incomplete Dominance</p> Signup and view all the answers

    What is the genotype of the first parent in the cross?

    <p>LlRR</p> Signup and view all the answers

    What is the probability of a long, red offspring resulting from the cross?

    <p>4/16</p> Signup and view all the answers

    How do the IA and IB alleles interact in determining blood type?

    <p>IA and IB are codominant</p> Signup and view all the answers

    What is the genotype of an individual with type O blood?

    <p>ii</p> Signup and view all the answers

    What is the term for the interaction of many genes that determines a given characteristic?

    <p>Polygenic inheritance</p> Signup and view all the answers

    What is the result of breeding a full-color rabbit with a genotype of Ccch and a Himalayan rabbit with a genotype of chc?

    <p>A mix of full-color and Himalayan offspring</p> Signup and view all the answers

    What type of inheritance pattern shows a gradual range of characteristics, rather than distinct groups?

    <p>Polygenic inheritance</p> Signup and view all the answers

    What is the principle that states that alleles of a gene for one trait segregate independently of the alleles of a gene for another trait?

    <p>Independent assortment</p> Signup and view all the answers

    What is the term for the situation where both alleles of a gene are expressed equally in the phenotype?

    <p>Codominance</p> Signup and view all the answers

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