Skip to content
Mid-Terms.org

Biology (Grades 9–10) Midterm — Quick Check, Units 4–6

← Midterm Library / Science / Biology

Science Grades 9–10 10 multiple choice

Free printable Biology midterm (Grades 9–10): 10 multiple-choice questions covering Cell Division & DNA, Genetics, Evolution & Ecology. Answer key included — customize it in the Midterm Maker.

Customize in Midterm Maker
Biology (Grades 9–10) Midterm — Quick Check, Units 4–6
Name: Date: Period:

Directions: Read each question carefully and choose the best answer.

Covers: Cell Division & DNA · Genetics · Evolution & Ecology

Part 1: Multiple Choice

  1. Crossing over, which increases genetic variation, occurs during which stage?
    1. A. S phase of interphase
    2. B. Anaphase of mitosis
    3. C. Telophase II of meiosis
    4. D. Prophase I of meiosis
  2. In RNA, which base replaces thymine?
    1. A. Uracil
    2. B. Guanine
    3. C. Cytosine
    4. D. Adenine
  3. A human body cell has 46 chromosomes. How many chromosomes are in a human egg cell?
    1. A. 46
    2. B. 92
    3. C. 12
    4. D. 23
  4. What does Mendel's law of segregation state?
    1. A. Genes on the same chromosome always stay together
    2. B. Dominant alleles are more common
    3. C. Offspring blend their parents' traits
    4. D. The two alleles for a gene separate when gametes form
  5. Why is red-green color blindness more common in males than in females?
    1. A. The allele is dominant only in males
    2. B. Females have no color-vision genes
    3. C. Males have only one X chromosome
    4. D. The allele is on the Y chromosome
  6. Two heterozygous plants (Aa × Aa) are crossed. What is the expected phenotypic ratio if A is completely dominant?
    1. A. 1:1 dominant to recessive
    2. B. 4:0 dominant to recessive
    3. C. 3:1 dominant to recessive
    4. D. 1:2:1 dominant to recessive
  7. Which condition is required for natural selection to occur?
    1. A. A population of identical individuals
    2. B. Unlimited food and space
    3. C. Individuals changing traits on purpose
    4. D. Inherited variation among individuals
  8. A river splits a population in two. After many generations, the groups can no longer interbreed. What process occurred?
    1. A. Convergent evolution
    2. B. Artificial selection
    3. C. Coevolution
    4. D. Speciation through geographic isolation
  9. Random changes in allele frequencies that have the greatest effect in small populations are called what?
    1. A. Natural selection
    2. B. Artificial selection
    3. C. Genetic drift
    4. D. Gene flow
  10. In a population in Hardy-Weinberg equilibrium, 16% of individuals show the recessive phenotype. What is the frequency of the recessive allele?
    1. A. 0.4
    2. B. 0.84
    3. C. 0.16
    4. D. 0.6

More Biology midterms