Genetics 8th Grade Quiz

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    Sex cells are also known as 

    • Gametes
    • Haploid
    • Diploid
    • Homologous
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About This Quiz

This Genetics quiz for 8th grade covers fundamental concepts including cell classification (XY, XX), gametes, mitosis stages, chromosome duplication, and non-mitotic stages. It assesses understanding of basic genetic processes, enhancing comprehension of how traits are inherited.

Genetics 8th Grade Quiz - Quiz

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  • 2. 

    Genetically speaking, how are the daughter cells compared to the parent cell at the end of mitosis?   

    • Similar

    • Identical

    • Different

    • Weird

    Correct Answer
    A. Identical
    Explanation
    During mitosis, the parent cell divides into two daughter cells. The daughter cells are genetically identical to each other and to the parent cell because they receive an exact copy of the parent cell's DNA. This is achieved through the replication and segregation of chromosomes during the cell division process. Therefore, the correct answer is "Identical."

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  • 3. 

    Chromosomes duplicate before mitosis and meiosis

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Chromosomes do indeed duplicate before both mitosis and meiosis. This duplication occurs during the S phase of the cell cycle, where the DNA in the chromosomes is replicated. This ensures that each daughter cell receives a complete set of chromosomes during cell division. Therefore, the statement "Chromosomes duplicate before mitosis and meiosis" is true.

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  • 4. 

    How many chromosomes are in the end of mitosis?

    • 23

    • 53

    • 47

    • 46

    Correct Answer
    A. 46
    Explanation
    During mitosis, the cell undergoes division, resulting in two daughter cells that are genetically identical to the parent cell. Each daughter cell receives the same number of chromosomes as the parent cell. In humans, the normal diploid number of chromosomes is 46, which means that each daughter cell at the end of mitosis will also have 46 chromosomes.

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  • 5. 

    There are only somatic cells in Mitosis and not in meiosis

    • True

    • False

    Correct Answer
    A. False
    Explanation
    This statement is false. Both mitosis and meiosis involve the division of cells, but they differ in their purpose and the type of cells involved. Mitosis is the process by which somatic cells divide to produce two identical daughter cells. On the other hand, meiosis is the process of cell division that produces gametes (sperm and eggs) and involves two rounds of division, resulting in four non-identical daughter cells. Therefore, meiosis does involve somatic cells in addition to the production of gametes.

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  • 6. 

    How many chromosomes are there in the end meiosis

    • 23

    • 46

    • 25

    • 65

    Correct Answer
    A. 23
    Explanation
    In the process of meiosis, the number of chromosomes is halved. This means that the original number of chromosomes is reduced by half in each cell. Since humans have 46 chromosomes in their somatic cells, the correct answer is 23 chromosomes in the end of meiosis.

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  • 7. 

    How many total cells are in the end of mitosis

    • 9

    • 4

    • 6

    • 2

    Correct Answer
    A. 2
    Explanation
    During mitosis, a single cell divides into two identical daughter cells. Therefore, at the end of mitosis, there are two total cells.

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  • 8. 

    Male cells and female cells are classifies as

    • Yx,xx

    • Xx,xx

    • Xy,xx

    • None of the above

    Correct Answer
    A. Xy,xx
    Explanation
    The correct answer is "xy,xx" because in humans, males have one X and one Y chromosome (xy), while females have two X chromosomes (xx). This combination of chromosomes determines the sex of an individual.

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  • 9. 

    What is the name for sex cells like sperm and egg cells?

    • Haploid

    • Triploid

    • Diploid

    • Homologous

    Correct Answer
    A. Haploid
    Explanation
    Haploid is the correct answer because haploid refers to cells that contain a single set of chromosomes, which is characteristic of sex cells like sperm and egg cells. These cells are produced through a process called meiosis, where the number of chromosomes is halved. Haploid cells are important for sexual reproduction as they combine during fertilization to form a diploid zygote with a complete set of chromosomes.

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  • 10. 

    What two stages are not part of mitosis?

    • Cytokinesis

    • Telophase

    • Interphase

    • Prophase

    Correct Answer(s)
    A. Cytokinesis
    A. Interphase
    Explanation
    Cytokinesis and Interphase are not part of mitosis. Cytokinesis is the process of dividing the cytoplasm and forming two separate daughter cells, which occurs after mitosis. Interphase is the stage where the cell prepares for division by growing, replicating its DNA, and carrying out normal cell functions. Mitosis consists of four stages: Prophase, Metaphase, Anaphase, and Telophase, where the chromosomes condense, align at the center, separate, and the nuclear envelope reforms, respectively.

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  • 11. 

    What is DNA

    • Double helix

    • Stuff

    • A self-replicating material present in nearly all living organisms

    • Deoxyribonucleic acid

    Correct Answer
    A. A self-replicating material present in nearly all living organisms
    Explanation
    DNA, or deoxyribonucleic acid, is a self-replicating material that is found in almost all living organisms. It is responsible for carrying the genetic information of an organism and plays a crucial role in the inheritance of traits from one generation to the next. The structure of DNA is a double helix, which allows it to store and transmit genetic information efficiently. This answer accurately describes the nature and function of DNA in living organisms.

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  • 12. 

    What are homologous cells?

    • I don't know

    • When the chromosomes are pulled apart

    • When the chromosomes are in two different cells

    • When the two chromosomes are in pairs lined up in the middle

    Correct Answer
    A. When the two chromosomes are in pairs lined up in the middle
    Explanation
    Homologous cells refer to the condition when the two chromosomes are in pairs lined up in the middle. This term is commonly used in genetics to describe the pairing of chromosomes during meiosis, where each chromosome aligns with its corresponding homologous chromosome. This pairing is essential for the exchange of genetic material and the formation of gametes.

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  • 13. 

    What is the name of the starting cell in both mitosis and meiosis

    • Haploid

    • Diploid

    • Somatic

    • Homologous

    Correct Answer
    A. Somatic
    Explanation
    The name of the starting cell in both mitosis and meiosis is somatic. Somatic cells are the non-reproductive cells in an organism, and they undergo mitosis to produce two identical daughter cells. In meiosis, somatic cells undergo a specialized form of cell division to produce gametes, which are haploid cells. Therefore, somatic cells are the starting point for both mitosis and meiosis.

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  • Jan 14, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 25, 2015
    Quiz Created by
    Rambo12345
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