De Bio Genetics Review (Not Graded)

19 Questions | Total Attempts: 120

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De Bio Genetics Review (Not Graded)

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Questions and Answers
  • 1. 
    Cystic fibrosis is an autosomal recessive genetic disorder. If one parent of a child is a carrier, has one copy of the faulty cystic fibrosis gene (Cc), and the other parent is not a carrier (genotype = CC) what is the % chance of the child having the disease?
    • A. 

      0

    • B. 

      25

    • C. 

      50

    • D. 

      75

    • E. 

      100

  • 2. 
    Pedigree analysis can be used to determine the mode of inheritance of a particular trait.. Females are represented by circles and males by squares. What is the mode of inheritance of the trait represented by shaded shapes?
    • A. 

      Autosomal dominant

    • B. 

      Autosomal recessive

    • C. 

      Autosomal recessive or Autosomal dominant

    • D. 

      X linked - dominant

  • 3. 
    What is the mode of inheritance of the trait represented by shaded shapes?
    • A. 

      Autosomal recessive

    • B. 

      Autosomal dominant

    • C. 

      Autosomal dominant or autosomal recessive

    • D. 

      X linked

  • 4. 
    There are multiple alleles for blood type. A and B are co-dominant and o is recessive. If either parent has group AB, what possible blood type/s could the children not inherit.
    • A. 

      A

    • B. 

      B

    • C. 

      AB

    • D. 

      O

    • E. 

      A and o

    • F. 

      B and o

  • 5. 
    If both parents have group A, what blood type/s can their children inherit?
    • A. 

      A

    • B. 

      B

    • C. 

      O

    • D. 

      A and o

  • 6. 
    X linked recessive traits such as colour blindness only affect males
    • A. 

      True

    • B. 

      False

  • 7. 
    X linked recessive traits affect mostly males
    • A. 

      True

    • B. 

      False

  • 8. 
    For X linked reccessive traits, male to male transmission never occurs
    • A. 

      True

    • B. 

      False

  • 9. 
    X linked dominant disorders affect all daughters of affected males
    • A. 

      True

    • B. 

      False

  • 10. 
    For Y linked disorders, male to male transmission never occurs
    • A. 

      True

    • B. 

      False

  • 11. 
    An idividual who has two of the same allele is said to be...
    • A. 

      Homologous

    • B. 

      Heterozygous

    • C. 

      Heteromologous

    • D. 

      Homozygous

    • E. 

      Diplozygous

  • 12. 
    Where the two alternatives for a trait are broad and narrow, and broad is dominant, the phenotype of a homozygous dominant individual would be expressed as...
    • A. 

      BB

    • B. 

      Nn

    • C. 

      Bn

    • D. 

      NN

    • E. 

      Broad

  • 13. 
    The appearance resulting from a given gene combination is referred to as the
    • A. 

      Geneotype

    • B. 

      Phenotype

    • C. 

      Prototype

    • D. 

      Stereotype

    • E. 

      Allelotype

  • 14. 
    Where two alternatives for a trait are tall and short, and tall is dominant, the genotype of a heterozygous individual would be expressed...
    • A. 

      SS

    • B. 

      Ss

    • C. 

      SS

    • D. 

      Ss

    • E. 

      Tall

  • 15. 
    Alpha 1 anti-trypsin deficiency is an autosomal recessive genetic disorder. If both parents are genotype (Aa) what is the chance of any offspring not expressing the disease phenotype?
    • A. 

      0

    • B. 

      25

    • C. 

      50

    • D. 

      75

    • E. 

      100

  • 16. 
     A woman is blood type B-.  She can donate blood to which blood types?
    • A. 

      B+, B-, AB+, AB-

    • B. 

      B-, AB-

    • C. 

      O+, O-, B+, B-

    • D. 

      O-, B-

  • 17. 
    A man is blood type A+.  He can receive blood from which donors?
    • A. 

      A-, A +, AB-, AB+

    • B. 

      A+, AB+

    • C. 

      O+, A +

    • D. 

      O-, O+, A-, A+

  • 18. 
    In peas, purple flower color is dominant while white flowers are recessive.  Plant height is governed by a seperate gene and tall is dominant, dwarf is recessive.  A pair of peas is crossed and produce the following offspring: 550 purple, tall 190 white, tall 571 purple, dwarf 181 white, dwarf Which of the following is a possible cross that would explain these offspring?
    • A. 

      AaBb x AaBb

    • B. 

      AaBb x aabb

    • C. 

      AaBb x Aabb

    • D. 

      AaBb x aaBb

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