Download 3/10/15- Phases of Meiosis WS

Bio#: _______
Name: ____________________________________________
Date: _____________ Hour: ________
Phases of Meiosis
Complete the Table.
Phase of Meiosis
Description
1.
Cells undergo a round of DNA replication, forming
duplicate chromosomes
2.
Each chromosome pairs with its corresponding homologous
chromosome to form a tetrad
3.
4.
5.
Spindle fibers attach to the chromosomes
The fibers pull the homologous chromosomes toward
opposite ends of the cell
Nuclear membranes form, the cell separates into two cells
6.
Meiosis I results in two haploid daughter cells, each with
half the number of chromosomes as the original cell.
7.
The chromosomes line up in a similar way to the metaphase
stage of mitosis
8.
The sister chromatids separate and move toward the opposite
ends of the cell.
9.
10. Does meiosis result in the formation of
Meiosis II results in four haploid daughter cells.
haploid cells or diploid cells? (circle one)
11. The number of chromosomes in a gamete is represented by the symbol _____________.
12. If an organism’s diploid number is 24, what is its haploid number? ____________
13. How many alleles for each gene does each gamete have? _____________
.
14. What process is shown in the above figure? ____________________________
___________________
15. When are tetrads formed during meiosis? _________________________________
16. Unlike mitosis, which results in 2 cells, meiosis results in ______________________________________.
17. Unlike mitosis, which results in genetically identical cells, meiosis results in genetically
_________________________________________
______________.
18. A diagram showing the relative locations of each known gene on a particular chromosome is know as a
_________________________
__________________.
19. Gene maps are based on the frequencies of what?
_______________________________________________________________________________________
20. What assorts independently?
GENES
or
CHROMSOMES
(circle one)