Unit 7 Target 5: Complex Inheritance

6 Questions | Total Attempts: 469

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Unit 7 Target 5: Complex Inheritance

Questions and Answers
  • 1. 
    Horses born to 2 palomino (golden-coated) horses have a 25% chance of having a white coat, a 25% chance of having a chestnut (brown) coat, and a 50% chance of having a palomino coat. Which description of inheritance best explains the coat-color trait in these horses?
    • A. 

      Palamino coat color is a recessive trait.

    • B. 

      Palamino coat color is a dominant trait.

    • C. 

      Coat color is an incompletely dominant trait.

    • D. 

      Coat color is a sex-linked trait

  • 2. 
    Situations in which one allele for a gene is not completely dominant over another allele for that gene are called
    • A. 

      Multiple alleles.

    • B. 

      Incomplete dominance.

    • C. 

      Polygenic inheritance.

    • D. 

      Multiple genes.

  • 3. 
    A cross of a red cow (RR) with a white bull (WW) produces all roan offspring (RRWW).  This type of inheritance is known as
    • A. 

      Incomplete dominance.

    • B. 

      Polygenic inheritance.

    • C. 

      Codominance.

    • D. 

      Multiple alleles.

  • 4. 
    Jeanine inherited 2 alleles for round eye shape and has round eye shape. Her brother inherited 1 allele for round eye shape and 1 allele for almond eye shape and has almond eye shape. What type of trait is round eye shape?
    • A. 

      Co-dominant

    • B. 

      Dominant

    • C. 

      Recessive

    • D. 

      Sex-linked

  • 5. 
    In humans, eye color is controlled by
    • A. 

      Simple dominance.

    • B. 

      Multiple alleles.

    • C. 

      Polygenic inheritance.

    • D. 

      Incomplete dominance.

  • 6. 
    A cross of a red flower (RR) with a white flower (WW) produces all pink offspring (RRWW). This type of inheritance is known as
    • A. 

      Incomplete dominance.

    • B. 

      Polygenic inheritance.

    • C. 

      Codominance.

    • D. 

      Multiple alleles.

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