Khah Academy Video: Phases of Meiosis Review Questions for ECA
http://www.khanacademy.org/science/biology/cell-division/v/phases-of-meiosis
Or, Khan Academy Videos (found on your home page under “Links”)
Directions:
- From your home page, use your computer mouse and click on the “Links” down arrow
- Click on the link titled, “Khan Academy”
- Once you have been re-directed to this page, click on the “Biology” button found under the title
“Science & Economics”
- Click on the video topic titled, “Cells and Cell Division”
- Click on “Phases of Meiosis” under the “Videos” title
- When ready, hit the “Play” arrow in the middle of the screen, watch the video, and answer the following
multiple choice questions: (note: if you need to pause video, replay, etc., use the control buttons at the
bottom left of the video screen)
Answer each of the following questions by placing the letter of the correct response in the table on the
answer sheet.
1. In meiosis you begin with a diploid cell and end up with
A. two diploid cells
B. two haploid cells
C. four diploid cells
D. four haploid cells
2. What is the purpose of meiosis?
A. to produce gametes
B. to produce skin cells
C. to repair damaged cells
D. this is how cells replace dead cells
3. What important event occurs during prophase I of meiosis that does not happen in mitosis?
A. replication of DNA
B. crossing over between homologous chromosomes
C. the nuclear envelope disappears
D. formation of spindle fibers
4. What occurs during crossing over?
A. two complete chromatids switch places
B. chromosomes move the other side of the cell
C. portions of homologous chromosomes interchange
D. chromosome number is cut in half
5. During anaphase I which of the following does NOT occur
A. sister chromatids separate
B. chromosome number is cut in half
C. homologous chromosomes separate
D. chromosomes from each parent divide independently
6. What is produced at the end of meiosis I?
A. 2 cells with half the chromosome number
B. 2 cells with the full (diploid) chromosome number
C. 4 diploid cells
D. 3 haploid cells
7. How many cycles of division do cells go through in meiosis?
A. 1
B. 2
C. 3
D. 4
Go on to next page…
8. During anaphase II what occurs?
A. homologous chromosomes separate
B. the cell divides into two cells
C. the cell divides into four cells
D. sister chromatids separate
9. Crossing over (genetic recombination) and independent assortment result in
A. genetic variation in the gametes
B. four identical gametes
C. two diploid cells
D. a very large number of mutations