Name: _________________________________________________ Date: ______________ Period: _____
Meiosis
Directions: For Questions 1–7, write True if the statement is true. If the statement is false, change the
underlined word to make the statement true.
1. The offspring of two parents obtains one copy of every gene from each parent.
2. A gamete must contain one set of chromosomes.
3. A pair of chromosomes with genes for the same traits is homozygous.
4. One of each homologous chromosome pair comes from each offspring.
5. A cell that contains both sets of homologous chromosomes is haploid.
6. Gametes like eggs and sperm are haploid.
7. If an organism’s haploid number is 6, its diploid number is 3.
Directions: On the lines provided, identify whether the event described occurs in Meiosis I or Meiosis II.
8. Each duplicated chromosome pairs with its corresponding homologous
chromosome.
9. Cytokinesis occurs, forming two new cells.
10. Crossing-over occurs between tetrads.
11. Spindle fibers pull each homologous chromosome pair toward an opposite end of
the cell.
12. Chromosomes consist of two chromatids, but they are no longer in tetrads.
13. A nuclear membrane forms around each cluster of chromosomes and cytokinesis
follows, forming four new cells.
14. Tetrads line up across the center of the cell.
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15. Draw two homologous pairs of chromosomes (in different colors) in these diagrams to illustrate what
happens during these three phases of meiosis.
16. Identify which phase of meiosis is shown in the diagram below.
Directions: Use this diagram to answer Questions 17-19.
17. What does the diagram show? ________________________________
18. During what phase of meiosis does this process occur?
___________________________________________
19. What happens during this process? ____________________________
_________________________________________________________
_________________________________________________________
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Diploid vs. Haploid
Directions: For Questions 21–26, complete each statement by writing the correct word or words.
21. A diploid cell that enters mitosis with 16 chromosomes will divide to produce _________ daughter
cells. Each of these daughter cells will have ____________ chromosomes.
23. If the diploid number of chromosomes for an organism is 24, each daughter cell after mitosis will
contain _________ chromosomes.
24. A diploid cell that enters meiosis with 16 chromosomes will pass through _____________ cell
divisions, producing ______ daughter cells, each with ________ chromosomes.
25. Gametes have a __________________ number of chromosomes.
26. If an organism’s haploid number is 5, its diploid number is ________.
.
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