Genetics: Punnett Square
7th - University grade
907 times
Biology
60%average accuracy
4 years ago
sarabala
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15 QuestionsShow answers
  • Question 1
    60 seconds
    Q. A green pea plant (Gg) is crossed with a yellow pea plant (gg). Describe the genotype of the offspring. (Be sure to remember that the capital letter is dominant).
    answer choices
    50% heterozygous and 25% homozygous recessive
    50% heterozygous and 50% homozygous recessive
    100% homozygous recessive
    25% heterozygous and 50% homozygous
  • Question 2
    60 seconds
    Q. A tall plant (TT) is crossed with a tall plant (Tt). What is the phenotype of the offspring?
    answer choices
    50% homozygous dominant; 50% heterozygous; 100% tall
    100% homozygous dominant; 100% tall
    25% homozygous dominant; 75% heterozygous; 100% short
    50% homozygous dominant; 50% heterozygous; 100% short
  • Question 3
    60 seconds
    Q. A tall plant (Tt) is crossed with a short plant (tt). What is the genotype of the offspring?
    answer choices
    25% heterozygous; 75% homozygous
    100% homozygous dominant
    100% heterozygous
    50% heterozygous; 50% homozygous dominant
  • Question 4
    60 seconds
    Q. A tall plant (Tt) is crossed with a short plant (tt). What is the phenotype of the offspring?
    answer choices
    75% tall; 25% short
    25% tall; 75% short
    50% tall; 50% short
    100% tall
  • Question 5
    120 seconds
    Q. A white flower (rr) is crossed with a white flower (rr). What is the genotype of the offspring? Draw a Punnett square and answer the question.
    answer choices
    100% homozygous dominant
    100% heterozygous dominant
    100% homozygous recessive
    100% heterozygous recessive
  • Question 6
    120 seconds
    Q. A white flower (rr) is crossed with a white flower (rr). What is the phenotype of the offspring? Draw a Punnett square and answer the question.
    answer choices
    100% white
    75% white; 25% red
    75% red; 25% white
    100% red
  • Question 7
    120 seconds
    Q. A black chicken (BB) is crossed with a black chicken (BB). What is the genotype and phenotype of the offspring? Draw a Punnet square and naswer this question.
    answer choices
    100% heterozygous; 50% black
    100% homozygous dominant; 100% black
  • Question 8
    120 seconds
    Q. A red flower (Rd) is crossed with a white flower (rr). What is the genotype of the offspring? Draw a Punnett square and answer this question.
    answer choices
    50% heterozygous; 50% homozygous dominant
    100% homozygous dominant
    100% homozygous recessive
    50% heterozygous; 50% homozygous recessive
  • Question 9
    60 seconds
    Q. A homozygous dominant brown mouse (BB) is crossed with a heterozygous brown mouse (tan is the recessive color). List the offspring genotype and phenotype.
    answer choices
    50% homozygous dominant; 50% heterozygous and 100% tan
    25% homozygous dominant; 75% heterozygous; 100% brown
    50% homozygous dominant; 50% heterozygous and 100% brown
    75% homozygous dominant; 25% heterozygous and 100% tan
  • Question 10
    60 seconds
    Q. Two heterozygous white (brown fur is recessive) rabbits are crossed. What is their genotype?
    answer choices
    25% homozygous domestic; 25% homozygous recessive; 50% heterozygous
    50% homozygous dominant; 50% heterozygous
    25% homozygous domestic; 75% homozygous recessive
  • Question 11
    60 seconds
    Q. Two heterozygous white(brown fur is recessive) rabbits are crossed. What is the phenotype of the offspring?
    answer choices
    75% white; 25% brown
    25% white; 75 % brown
  • Question 12
    60 seconds
    Q. Two heterozygous red flowers (white flowers are recessive) are crossed. What is the genotype of the offspring?
    answer choices
    75% homozygous dominant; 25% heterozygous
    50% homozygous dominant; 50% heterozygous
    25% homozygous dominant; 25% homozygous recessive; 50% heterozygous
  • Question 13
    60 seconds
    Q. Two heterozygous red flowers (white flowers are recessive) are crossed. What is the phenotype of the offspring?
    answer choices
    50% red; 50% white
    75% white; 25% red
    25% red; 25% pink; 50% white
    75% red; 25% white
  • Question 14
    60 seconds
    Q. A homozygous tall plant (TT) is crossed with a heterozygous tall plant (Tt) (short is the recessive phenotype). What are the genotypes and phenotypes of the offspring?
    answer choices
    100% homozygous dominant; 100% tall
    50% homozygous dominant; 50% heterozygous and 100% tall
    25% heterozygous; 75% homozygous dominant and 100% tall
  • Question 15
    120 seconds
    Q. A heterozygous white rabbit is crossed with a homozygous black rabbit. List the parent genotypes; draw and fill and Punnett square, and then list the offspring genotypes and phenotypes. 
    answer choices
    genotype-25% heterozygous; 75% homozygous recessive and phenotype-50% white and 50% black
    genotype- 50% heterozygous; 50% homozygous recessive and phenotype- 50% white and 50% black
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