8841255
Descripción
Test por Megan Webb, actualizado hace más de 1 año
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Creado por Megan Webb
hace más de 7 años
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Pregunta 1
Pregunta
Mitosis and meiosis are processes involved in cellular reproduction. Which of the following describes an event that results from mitosis but NOT meiosis?
Respuesta
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Two stages of cell division
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Replication of cellular genetic material
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Daughter cells that are identical to the parent cell
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Four daughter cells that are produced from each parent cell
Pregunta 2
Pregunta
Which type of reproduction leads to increased genetic variation in a population?
Respuesta
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Parthenogenesis
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Asexual reproduction
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Sexual reproduction
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Vegetative reproduction
Pregunta 3
Pregunta
Which of the following best compares the processes of mitosis and meiosis?
Respuesta
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Mitosis involves one division cycle and results in diploid daughter cells, while meiosis consists of two division cycles and results in haploid gametes
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Mitosis involves one division cycle and results in haploid gametes, while meiosis consists of two division cycles and results in diploid daughter cells
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Mitosis involves two division cycles and results in diploid daughter cells, while meiosis consists of one division cycle and results in haploid gametes
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Mitosis involves two division cycles and results in haploid gametes, while meiosis consists of one division cycle and results in diploid daughter cells
Pregunta 4
Pregunta
Which of the following best explains why meiosis results in greater genetic diversity than mitosis?
Respuesta
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After meiosis, daughter cells are diploid and have twice as much genetic material, which can be divided in many more possible combinations
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After meiosis, haploid daughter cells are fertilized, which doubles the number of chromosomes and increases the number of possible genes
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During meiosis, chromosomes assort themselves independently of each other, which allows for more different possible combinations of chromosomes
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During meiosis, more daughter cells are produced, which increases the likelihood that fertilization will occur
Pregunta 5
Pregunta
Which of the following occurs during mitosis?
Respuesta
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The cell membrane pinches one cell into two
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The chromosomes of the patient cell are copied
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The parent cell takes in nutrients and doubles in size
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The nucleus of the parent cell divides into two nuclei
Pregunta 6
Pregunta
In a single celled organism, mitosis is used for:
Respuesta
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Development
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Reproduction
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Growth
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Repair
Pregunta 7
Pregunta
Multicellular organisms use mitosis for growth, development and:
Respuesta
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Apoptosis
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Repair
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Reproduction
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Interphase
Pregunta 8
Pregunta
Why is it important for the daughter cells to divide a second time in meiosis?
Respuesta
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The second division switches parts of matching chromatids to increase genetic variation
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The second division forms four identical cells to ensure that all offspring have the same traits
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The second division sorts chromosomes into cells that are the same as the parent cells
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The second division forms haploid cells that can combine with other haploid cells during fertilization
Pregunta 9
Pregunta
What happens to sister chromatids in meiosis II?
Respuesta
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They duplicate
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They separate
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They remain together
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They do not take part
Pregunta 10
Pregunta
Which of the following describes how the process of crossing over during meiosis leads to an increase in genetic diversity?
Respuesta
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During prophase I, DNA replication takes place and homologous chromosomes trade places with each other before lining up in preparation for metaphase
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During prophase I, DNA segments are exchanged between homologous chromosomes resulting in different combinations of alleles
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During prophase II, fragments of DNA break off of chromosomes and attach to the ends of other chromosomes, resulting in different gene sequences
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During prophase II, sister chromatids separate from each other, and as they travel to oppsite ends of the cell, DNA segments of nearby chromosomes are exchanged
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