1. When would the quantity of DNA double when growing cells?

a) before karyokinesis; b) after karyokinesis; c) after cytokinesis; d) during prophase.

2. Which one of the following is a difference between sexual and asexual reproduction?

a) regeneration is exclusive to sexual reproduction;

b) sexual reproduction produced more offspring;

c) sexual reproduction includes the development of unfertilized eggs;

d) sexual reproduction is more likely to increase genetic variation than is asexual reproduction;

e)asexual reproduction always increase the number of sets of chromosomes in the offspring whereas sexual

reproduction decreases the number of sets of chromosomes in the offspring.

3. If the S-phase of interphase was eliminated from the cell cycle, the daughter cells at the end of mitosis would:

a) have half the genetic material as the parent cell;     b) be genetically identical;

c) be genetically identical to the parent cell;               d) none of these are correct choices.

4. You’re a researcher for a drug company. Which of the following candidate drugs would be worth developing as a

cancer chemotherapy agent? A drug that:

a) causes cells to divide at a right angle from their usual orientation;

b) interferes with cellular respiration;

c) prevents sister chromatids from separating at anaphase;

d) prevents crossing over;

e) prevents tetrad formation.

5. Which one of the following is not a function of mitosis? Mitosis helps organisms:

a) grow; b) regenerate lost parts; c) reproduce asexually; d) repair tissues; e) these are actually all functions of mitosis.

    `   6.Which of the following would be the most significant difference between mitosis and meiosis?

        a) Chromosomes are duplicated before mitosis.

        b) Meiosis is not followed by cytokinesis.

        c) Homologous pairs of chromosomes are split up in meiosis.

        d) Crossing over occurs in mitosis.

            a) 88;                    b) 44;                c) 33;                d) 22;                e) 11;                ab) 5.5.

Use the following to answer questions 8 – 10:

a) interphase;    b) prophase;    c) metaphase;    d) anaphase;    e) telophase;    ab) cytokinesis.

8. The phase in which enzymes copies the genetic material.

9. The phase in which is the reverse of prophase.

10. The phase just prior to sister chromatid separation.

11.    Answer this question on the back of the scantron.

        When did YOU (personally) begin meiosis?