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DNA ____________________ is essential to cell division because it separates the two copies of DNA attached by the centromere.

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The mitotic spindle is made of


A) centrosomes.
B) chromosomes.
C) kinetochores.
D) microtubules.

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New nuclei form during the anaphase portion of cell division.

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Which of the following series correctly represents the levels of DNA packing from simplest to most dense?


A) DNA strand → chromatin → chromosomes
B) chromosome → chromatin → DNA strand
C) chromosome → chromatin → DNA
D) chromatin → DNA → centromere

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The parent cell shown below-left undergoes meiosis. In the box are three different gametes, numbered 1 through 3. The parent cell shown below-left undergoes meiosis. In the box are three different gametes, numbered 1 through 3.   Which of these gametes could have come from this parent cell? A) gamete 1 B) gamete 2 C) gamete 3 D) All of these gametes could have come from this parent cell. Which of these gametes could have come from this parent cell?


A) gamete 1
B) gamete 2
C) gamete 3
D) All of these gametes could have come from this parent cell.

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The goal of ____________________ is to increase genetic diversity by creating a new diploid individual from haploid cells.

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A zygote contains 16 chromosomes. The diploid number of this cell is ____________________ [2n = ?].

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If a plant has a karyotype of 18 chromosomes, how many chromosomes would be present in each of its gametes?


A) 36
B) 18
C) 9
D) 6

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In what way(s) would the karyotype shown below be different if the material used to prepare the analysis were an egg or sperm cell? In what way(s) would the karyotype shown below be different if the material used to prepare the analysis were an egg or sperm cell?   A) The total number of chromosomes would be 23 in this example. B) No homologous pairing would be possible. C) The sex chromosome would be represented by a single X or a single Y rather than a pair. D) all of the above


A) The total number of chromosomes would be 23 in this example.
B) No homologous pairing would be possible.
C) The sex chromosome would be represented by a single X or a single Y rather than a pair.
D) all of the above

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