Create a Quiz. The academic subject for which the text must be created - Biology. Content must be appropriate for Year or Grade 10. Required...
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Which subjectBiology
What age groupYear or Grade 10
What topicMendelian GeneticsComplex Inheritance Patterns, basic Mutations and Pedigrees
Question typesClose-ended
Number of questions20
Number of answers4
Correct answersExactly 1
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Grade 10 Biology Quiz: Mendelian Genetics, Complex Inheritance Patterns, Mutations, and Pedigrees

Instructions:

Choose the correct answer for each question below. Only one answer is correct for each question.

Questions:

  1. What is the basic principle behind Mendel's law of segregation?

    • A. Alleles are independently assorted during gamete formation.
    • B. During fertilization, alleles come together to form a genotype.
    • C. Each allele segregates into different gametes during meiosis.
    • D. Only dominant alleles are expressed in the phenotype.

  2. If a pea plant has two alleles for tall stems (TT), what is this plant's genotype?

    • A. Homozygous dominant
    • B. Heterozygous
    • C. Homozygous recessive
    • D. Dominant phenotype

  3. In incomplete dominance, how does the phenotype of the heterozygote compare to that of the two homozygotes?

    • A. It exhibits a blended phenotype.
    • B. It displays the dominant phenotype.
    • C. It becomes recessive.
    • D. It shows no observable traits.

  4. A man with blood type AB has a child with a woman who has blood type O. What are the possible blood types of their child?

    • A. A or B
    • B. A, B, AB, or O
    • C. AB only
    • D. O only

  5. What is a pedigree chart primarily used for?

    • A. To apply Mendel’s laws of inheritance
    • B. To track the genetic history of traits across generations
    • C. To differentiate between dominant and recessive traits
    • D. To illustrate DNA sequences

  6. If a trait is sex-linked, which chromosome is it most likely associated with?

    • A. Chromosome 1
    • B. Chromosome 2
    • C. X or Y chromosome
    • D. Chromosome 21

  7. What is it called when there is a change in a DNA sequence?

    • A. Replication
    • B. Transcription
    • C. Mutation
    • D. Translation

  8. Which type of mutation does not change the amino acid sequence of a protein?

    • A. Nonsense mutation
    • B. Missense mutation
    • C. Silent mutation
    • D. Frameshift mutation

  9. In a certain plant, red flower color (R) is dominant over white (r). What is the expected phenotype ratio from a cross between two heterozygous plants (Rr x Rr)?

    • A. 1 red : 1 white
    • B. 3 red : 1 white
    • C. 2 red : 2 white
    • D. 1 red : 2 white : 1 white

  10. What term describes individuals that have two different alleles for a given trait?

    • A. Homozygous
    • B. Heterozygous
    • C. Dominant
    • D. Recessive

  11. If a genetic trait is recessive, what is true of the phenotype?

    • A. It is expressed in individuals with at least one dominant allele.
    • B. It can only be expressed in homozygous recessive individuals.
    • C. It is always dominant over other traits.
    • D. It is never expressed.

  12. In a dihybrid cross, what is the phenotypic ratio of offspring when both parents are heterozygous for two traits?

    • A. 9:3:3:1
    • B. 1:1:1:1
    • C. 3:1
    • D. 1:2:1

  13. What does a capital letter in a genetic representation signify?

    • A. It indicates the recessive allele.
    • B. It indicates the dominant allele.
    • C. It indicates a mutation.
    • D. It indicates a phenotype.

  14. What chromosome configuration is produced by the fusion of a mutated and a regular gene?

    • A. Wild type
    • B. Haplotype
    • C. Hybrid
    • D. Mutant type

  15. A carrier for a genetic disorder has what type of genotype?

    • A. Homozygous recessive
    • B. Homozygous dominant
    • C. Heterozygous
    • D. None of the above

  16. If a recessive trait appears in an offspring whose parents do not show that trait, what is likely about the parents’ genotypes?

    • A. Both parents are homozygous recessive.
    • B. Both parents are homozygous dominant.
    • C. One parent is homozygous dominant and the other is homozygous recessive.
    • D. Both parents are heterozygous.

  17. The condition of having an extra chromosome due to nondisjunction is known as:

    • A. Monosomy
    • B. Trisomy
    • C. Polyploidy
    • D. Deletion

  18. What is the expected genotype ratio from a cross of two heterozygous parents (Aa x Aa)?

    • A. 1 AA : 2 Aa : 1 aa
    • B. 3 AA : 1 aa
    • C. 1 Aa : 1 aa
    • D. 1 AA : 1 Aa

  19. If two parents are carriers for cystic fibrosis (CF) which is a recessive disorder, what is the probability that their child will have CF?

    • A. 50%
    • B. 25%
    • C. 75%
    • D. 100%

  20. The observable traits of an individual resulting from the genotype are known as:

    • A. Phenotype
    • B. Genotype
    • C. Allele
    • D. Gene

Correct Answers:

  1. C
  2. A
  3. A
  4. A
  5. B
  6. C
  7. C
  8. C
  9. B
  10. B
  11. B
  12. A
  13. B
  14. D
  15. C
  16. D
  17. B
  18. A
  19. B
  20. A