Download WQ-Meiosis 2017

Name: ________________________________________Date: ___________________ Hour: _____
Biology……..Meiosis Webquest
WEbQUest- Meiosis
Site 1 www.sumanasinc.com/webcontent/animations/biology.html  click on Meiosis
1. Read the introduction. Explain the difference between sexual and asexual reproduction.
(Click on Animation)
2.
DNA replication takes place when? __________________
3.
Meiosis consists of two cell divisions: _________________ & __________________
4.
Centrosomes (aka centrioles) migrate to _______________________________
5.
The pairing of homologous chromosomes is called: ________________________
6.
Crossing over points are called __________________
7.
What happens in metaphase I ______________________________________________
8.
What happens during anaphase I __________________________________________
9.
In prophase II, each cells is [ diploid / haploid ] (circle)
10. In metaphase II, chromosomes line up in [ single | double ] file.
11. What happens during telophase II? _______________________________________
12. (Click to Conclusion). Each of the four daughter cells produced by meiosis is [ identical / unique ]
(Click to Quiz)
13. With respect to meiosis, when does DNA replication occur? ____________________
14. When does crossing over occur? _________________
15. During which phase do chromosomes line up along the equator? __________________
16. During which phase does the nuclear membrane form around the chromosomes? _____________
Site 2:
www.pbs.org/wgbh/nova/baby/
 Click on “How Cells Divide”  Click on “Mitosis vs. Meiosis”
DIRECTIONS: After viewing the animation. Fill out the chart below, by placing a check in the box or boxes & identify the stages 
Event
Two cell divisions
Mitosis Only
Meiosis Only
Both
Four daughter cells produced
Chromosomes pair up
Spindle fibers form
Two cell divisions
Associated with sexual reproduction
Associated with growth & asexual reproduction
Involves synthesis of DNA
Chromosome number is maintained
Chromosome number is halved
Crossing over occurs
Daughter cells are NOT identical
Site 3: APPLIED KNOWLEDGE Label the phase of meiosis.
1. ________________________
2. ________________________
3. ______________________ 4. ________________________
5. ________________________
6. ________________________
9. ________________________
10. ______________________
7. ______________________ 8. _____________________
11. A cell with a diploid number of 20 undergoes meiosis. This will produce ________ daughter cells, each with ________ chromosomes.
12. Synapsis occurs during this phase: _______________________
13 How many different possible combinations are there for a cell that has 10 chromosomes (5 pairs): _____________
14. At the end of meiosis I, ________ daughter cells are created. These daughter cells are [ diploid | haploid ].
16. Meiosis occurs in what type of cells: ______________________
Now label the photographs.
17. ______________________
18. ______________________
19. ______________________
20. ______________________
21. ______________________
22. ______________________
23. ______________________
24. ______________________
24. ______________________
25. ______________________