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