Mendelian Genetics Test

25 Questions | Total Attempts: 119

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Mendelian Genetics Test

Welcome to the electronic biology frontier classroom of the 21st century. The fact that living things inherit traits from their parents has been used since prehistoric times to improve crop plants and animals through selective breeding. However, the modern science of genetics, which attempts to understand the process of inheritance, only began with the work of Gregor Mendel in the mid-19th century. This test has unlimited number of attempts to increase your LEARNING and TEST-TAKING SKILLS. I wish you good luck and enjoy learning about genetics and heredity.


Questions and Answers
  • 1. 
    Sponge Bob has a yellow [Y] and blue [y] body color. Given the following genotype [Yy], describe the phenotype.
    • A. 

      (Pure yellow)

    • B. 

      (Pure blue)

    • C. 

      (Heterozygous yellow)

    • D. 

      (Heterozygous blue)

  • 2. 
    Purple garden pea flowers is dominant over recessive white flowers.  What is the genotype of a heterozygous purple flower?
    • A. 

      (PP)

    • B. 

      [PP]

    • C. 

      [Pp]

    • D. 

      [pp]

    • E. 

      [PW]

  • 3. 
    In garden peas, round seeds (R) is dominant to wrinkled seeds (r). What percentage of the offspring in the F1 generation will wrinkled, when P generation is [RR] x [rr]?
    • A. 

      0%

    • B. 

      25%

    • C. 

      50%

    • D. 

      75%

    • E. 

      100%

  • 4. 
    Straight hair [S] is dominant over curly hairy [s], Write the correct genotype for a homozygous curly hair individual.
  • 5. 
    In garden peas, round seeds (R) is dominant to wrinkled seeds (r). What percentage of the offspring in the F1 generation will round, when P generation is [Rr] x [rr]?
    • A. 

      0%

    • B. 

      25%

    • C. 

      50%

    • D. 

      75%

    • E. 

      100%

  • 6. 
    In garden peas, round seeds (R) is dominant to wrinkled seeds (r). What percentage of the F1 offspring will be phenotype round when P generation is [Rr] x [Rr]?
    • A. 

      0%

    • B. 

      25%

    • C. 

      50%

    • D. 

      75%

    • E. 

      100%

  • 7. 
    In garden peas, round seeds (R) is dominant to wrinkled seeds (r). When P generation has the following genotype [Rr] x [Rr].  What is the genotypic ratio of the F1 generation offspring?
    • A. 

      0 : 2 : 0

    • B. 

      1 : 2 : 3

    • C. 

      1 : 2 : 1

    • D. 

      2 : 4 : 2

    • E. 

      100 : 50 : 100

  • 8. 
    In garden peas, tall height (T) is dominant over the recessive short (t). The P generation is shown as [Tt] x [Tt].  What is the phenotypic ratio of the F1 offspring?
    • A. 

      3 : 1

    • B. 

      2 : 2

    • C. 

      1 : 1

    • D. 

      4 : 0

  • 9. 
    In garden peas, tall height (T) is dominant over the recessive short (t). The P generation is shown as [Tt] x [Tt]. How many of the F1 generation plants would be homozygous tall from 1,000 plants?
    • A. 

      100

    • B. 

      250

    • C. 

      500

    • D. 

      750

    • E. 

      1,000

  • 10. 
    In guinea pigs, the allele for short hair (S) is dominant over the long hair (s). If you mate a heterozygous short hair male to a homozygous short hair female. What is the genotype of the male?
    • A. 

      (SS)

    • B. 

      [Ss]

    • C. 

      (Ss)

    • D. 

      [ss]

    • E. 

      (ss)

  • 11. 
    In guinea pigs, the allele for short hair (S) is dominant over the long hair (s). If you mate a heterozygous short hair male to a homozygous short hair female. What is the genotype of the male?
    • A. 

      (SS)

    • B. 

      [Ss]

    • C. 

      (Ss)

    • D. 

      [ss]

    • E. 

      (ss)

  • 12. 
    In minks, brown (B) is dominant over (b) silver-blue hair color. What percentage of offspring of the F1 generation would you predict to be silver-blue. If you crossed a homozygous brown male mink with a homozygous silver-blue female mink?
    • A. 

      0%

    • B. 

      25%

    • C. 

      50%

    • D. 

      75%

    • E. 

      100%

  • 13. 
    In Four O' Clock flowers, red flowers [r] is incomplete dominant to white flowers [w]. The P generation is male homozygous red flower and female homozygous white flower. What is the genotypic ratio of the F1 generation offsprings?
    • A. 

      1 [rr] : 2 [rw] : 1 [ww]

    • B. 

      3 [RR] : 1 [rr] : 2 [rw]

    • C. 

      0 [rr] : 4 [rw] : 0 [ww]

    • D. 

      1 [rr] : 2 [rw] : 5 [ww]

  • 14. 
    In Four O' Clock flowers, red flowers [r] is incomplete dominant to white flowers [w]. The P generation is male heterozygous pink flower and female homozygous white flower. What is the phenotypic ratio of the F1 generation offsprings?
    • A. 

      1 (Red) : 2 (Pink) : 1 (White)

    • B. 

      0 (Red) : 2 (Pink) : 0 (White)

    • C. 

      0 (Red) : 2 (Pink) : 2 (White)

    • D. 

      1 (Red) : 3 (Pink) : 1 (White

  • 15. 
    What is the genus species name for maize (corn) from Dr. Barbara McClintock's experiment?  (Hint: write answer in scientific name format.)
  • 16. 
    If you recall in Mendel's pea-plant crosses, pink flowers were produced in the F1 generation from parents were (red) x (white). What type of genetic cross are you dealing studying?
    • A. 

      Codominance

    • B. 

      Test cross

    • C. 

      Complete dominance

    • D. 

      Incomplete dominance

    • E. 

      Polygenic dominance

  • 17. 
    A dihybrid genetic cross has two characteristics being tracked. What is the correct P generation genotypes of a male garden pea plant that is homozygous round [R] and yellow [Y] mated to a female that is homozygous wrinkled [r] and green [y]?
    • A. 

      (RR) x (RY)

    • B. 

      [RY] x [ry]

    • C. 

      (RY) x (ry)

    • D. 

      [ry] x [ry]

  • 18. 
    SpongeBob has various characteristics in the bikini bottom genetics worksheet. Squarepants (S) and roundpants (s);  round eye shape [R] and oval eye shape [r].  What is the genotype of SpongeBob for a heterozygous squarepants and round eye shape?
    • A. 

      (SR)

    • B. 

      [SR]

    • C. 

      [Sr]

    • D. 

      [sr]

    • E. 

      (sr)

  • 19. 
    SpongeBob has a long nose (L) and a stubby nose (l).  Write the correct genotype for a homozygous stubby nose.
  • 20. 
    SpongeBob has various characteristics in the bikini bottom genetics worksheet. Yellow body color [Y] and blue body color [y].  Write the correct genotype for a heterozygous yellow body color.   (HINT:  Please write your answer using correct genotype format.)
  • 21. 
    In garden peas, calculate the observed ratio of 917yellow seed color and 257 green seed color.  (Your answer must be calculated to the 100 place.)
    • A. 

      3.00 : 1

    • B. 

      3.21 : 1

    • C. 

      3.57 : 1

    • D. 

      4.01 : 1

  • 22. 
    In garden peas, calculate the observed ratio of 5,474 round seeds and 1,850 wrinkled seeds.  (Your answer must be calculated to the 100 place.)
    • A. 

      3.06 : 1

    • B. 

      2.96 : 1

    • C. 

      3.57 : 1

    • D. 

      2.65 : 1

  • 23. 
    Please select the genotypes which are dominant heterozygous trait. (Hint: there are multiple answers.)
    • A. 

      [AA]

    • B. 

      [Ff]

    • C. 

      [EE]

    • D. 

      [Dd]

    • E. 

      (Rr)

  • 24. 
    In Pisum sativum plants, round seeds [R] are dominate to wrinkled seeds [r]. The P generation has a male (heterozygous round) mated with a female (homozygous wrinkled).  What percentage of the offspring will be round?
    • A. 

      0%

    • B. 

      25%

    • C. 

      50%

    • D. 

      75%

    • E. 

      100%