BIO.3A Meiosis Practice Test

1. DNA replication does not occur after Meiosis I. Why is it important that the nucleus does NOT make more DNA before the cells divide again?

• It results in increased genetic diversity for the species.

• It results in uneven division of the cytoplasm.

• It results in offspring that are genetically identical to the parents.

• It results in daughter cells with the haploid number of chromosomes

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2. In which of the following cells would meiosis occur?

• Liver cells

• Nerve cells

• Muscle cells

• Reproductive cells

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3. By which process do human liver cells (and all other somatic cells) regenerate themselves?

• Mitosis

• Meiosis

• Budding

• Conjugation

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4. What type of cell is made during meiosis?

• Brain

• Stomach

• Egg

• Skin

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5. Which of the following is a result of crossing over during Prophase I of meiosis?

• Birth defects

• Greater genetic variation

• Offspring identical to parents

• Larger number of offspring

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6. How are mitosis & meiosis different from each other?

• Unlike mitotic cells, meiotic cells undergo a single division to half their chromosome number, after which they undergo crossing over to restore their diploid state.

• Unlike mitotic cells, meiotic cells undergo multiple divisions to produce several daughter cells that are identical to the parent cells.

• Unlike mitotic cells, meiotic cells undergo pairing of homologous chromosomes, allowing centromeres to remain intact during both cellular divisions.

• Unlike mitotic cells, meiotic cells undergo two divisions to produce haploid cells, allowing for genetic diversity in sexually reproducing organisms.

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7. Which statement correctly describes asexual reproduction in sponges?

• The organisms are producing genetically identical offspring through mitosis.

• The organisms are producing genetically different offspring through mitosis.

• The organisms are producing genetically identical offspring by combining DNA from two parents.

• The organisms are producing genetically different offspring by combining DNA from two parents.

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8. Which statement below best describes the purpose of meiosis in creating gametes?

• To reduce the chromosome number and allow for genetically identical offspring.

• To maintain the chromosome number and allow for genetically identical offspring.

• To increase the chromosome number and allow for genetically unique offspring.

• To reduce the chromosome number and allow for genetically unique offspring

9. Which of the following statements provides the best explanation for why sexual reproduction has an advantage over asexual reproduction in a hostile environment?

• Because sexual reproduction results in identical offspring.

• Because sexual reproduction results in larger numbers of offspring.

• Because sexual reproduction produces a greater number of male offspring.

• Because sexual reproduction provides greater genetic variation.

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10. Which two ways explain how the process of meiosis produces offspring that are genetically different from parents?

• The number of chromosomes is doubled in the offspring so that it has twice as much DNA as its parents.

• Only one parent is needed to produce offspring by meiotic cell division.

• The offspring receive genetic material from two parents with different DNA.

• Crossing over during the process of meiosis produces additional variation in the DNA.

• Meiosis preserves the number of chromosomes in the dividing cells so that they remain diploid.

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