Phases of Meiosis
Name of Phase
Description
1.
Homologous chromosomes pair up and form tetrad
2.
Spindle fibers move homologous chromosomes to opposite sides
3.
Nuclear membrane reforms, cytoplasm divides, 4 daughter cells formed
4.
Chromosomes line up along equator, not in homologous pairs
5.
Crossing-over occurs
6.
Chromatids separate
7.
Homologs line up alone equator
8.
Cytoplasm divides, 2 daughter cells are formed
Identifying Processes On the lines provided, order the different stages of meiosis I THROUGH meiosis
II, including interphase in the proper sequence.
1. _____________
2. ______________
3. _____________
4. _____________
5. ______________
6. _____________
7. ______________
8. _____________
9. ______________
homologous chromosome line up in the center of the cell
spindle fibers pull homologous pairs to ends of the cell
4 haploid (N) daughter cells form
cells undergo a round of DNA replication
sister chromatids separate from each other
2 haploid (N) daughter cells form
spindle fibers attach to the homologous chromosome pairs
individual chromatids move to each end of the cell
crossing-over (if any) occurs
Short Answer On the lines provided, answer the following questions.
10.
Compare the number and type of cells that result from meiosis vs mitosis.
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11.
How do the genetic contents of cells resulting from mitosis and meiosis differ?
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12.
Comparing and Contrasting Describe a similarity and a difference between meiosis I and
meiosis II.
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13
Applying Concepts If a diploid cell containing 28 chromosomes undergoes meiosis, how many
chromosomes will each daughter cell have?
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14
Compare and Contrast: How are mitosis and meiosis similar and different?
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Read each statement, then on the line write down the phase of mitosis or meiosis that the action
occurs. IF the action occurs in both, write both. The first one is done for you.
1.
metaphase I of meiosis I____________
2. ___________________________________________
3. ___________________________________________
Homologous chromosome line up in the
center of the cell
The individual chromosomes move apart.
4. ___________________________________________
Spindle fibers pull homologous pairs to ends
of the cell
4 haploid (N) daughter cells form
5. ___________________________________________
Cells undergo a round of DNA replication
6. ___________________________________________
7. ___________________________________________
The chromosomes line up across the middle
of the cell.
Chromosomes become visible.
8. ___________________________________________
Sister chromatids separate from each other
9. ___________________________________________
2 haploid (N) daughter cells form.
10. _________________________________________
Sister chromatids separate into individual
chromosomes.
Nuclear envelope re-forms.
11. _________________________________________
12. __________________________________________
13. _________________________________________
14. _________________________________________
15. _________________________________________
16. __________________________________________
Spindle fibers attach to the homologous
chromosome pairs
Individual chromatids move to each end of
the cell
The nucleolus disappears and the nuclear
envelope beaks down.
Each chromosome is connected to a spindle
fiber.
crossing-over (if any) occurs