Download Biology

AP Biology
Meiosis, Mitosis
Name ___________________
I. Match the description with the phase of meiosis.
A. ANAPHASE I
B. ANAPHASE II
D. METAPHASE II
E. PROPHASE I
AD. TELOPHASE I
AE. TELOPHASE II
C. METAPHASE I
AC. PROPHASE II
1. Synapsis happens here to form tetrads.
2. Chromosomes line up along the equator in a single line.
3. Homologous chromosomes separate from each other and move apart.
4. Centromere splits, sister chromatids separate.
5. Formation of the spindle (2 answers).
6. At the end of this phase there are 4 nuclei.
7. Crossing over is here if at all.
8. Tetrads line up along the equator.
9. Results in the formation of 2 nuclei.
10. Results in egg or sperm cells.
II. Multiple choice.
11. What is the haploid number of chromosomes in an organism that has 36
chromsomes in its somatic cells?
a) 9
b) 18
c) 36
d) 72
12. Which statement is NOT true about eukaryotic chromosomes
a) There is only one chromosome of each type in each body cell.
b) Chromosomes contain both DNA and associated histones.
c) Chromosomes condense from chromatin at the start of mitosis.
d) Chromosomes disperse back into chromatin at the end of mitosis.
13. Which statement is NOT true about mitosis?
a) Mitosis is a process that duplicates and divides the nuclear contents only.
b) Mitosis produces two daughter cells that contain the same number of
chromosomes as the parent cell.
c) Mitosis produces two daughter cells that contain the same kinds of chromosomes
as the parent cell.
d) Mitosis uses a 2n parent cell to form daughter cells containing n chromosomes.
14. Which represents the correct sequence of stages in the cell cycle?
a) G1, G2, S, M
b) G1, G2, M, S
c) G1, M, G2, S
d) G1, S, G2, M
15. In multicellular organisms, mitosis is
a) the means of tissue growth and repair
b) a way of generating new kinds of mutant or recombinant organisms
c) the means of sexual reproduction
d) able to occur in only a few cells of specialized tissues
16. What is the importance of crossing-over?
a) it provides extra genetic material for the daughter cells.
b) it increases the likelihood that daughter cells contain different genetic material.
c) it produces the proteins that are associated with DNA in chromosomes
d) it increases chromosome condensation
17. The events of meiosis II are most similar to
a) mitosis
b) meiosis I
c) interphase
d) prophase II
18. Which is NOT true about daughter cells of mitosis and meiosis?
a) in meiosis, daughter cells are haploid
b) in meiosis, there are four daughter cells
c) in mitosis, there are two daughter cells
d) in meiosis the daughter cells are genetically identical
19. Which of these is a correct statement about homologous chromosomes?
a) they have identical alleles
b) they pair up in prophase II
c) they are found in haploid cells
d) they have genes for the same traits at the same location
20. What is the diploid number of chromosomes in an organism that has 36
chromosomes in its sperm cells?
a) 9
b) 18
c) 36
d) 72
21. Which of these results in a recombination of genes from both parents on the same
chromosome?
a) synapsis
b) crossing over
c) mitosis
d) anaphase I
22. You see a cell with a cell plate beginning to form across the middle of a cell and
nuclei reforming at opposite ends of the cell. What is the cell?
a) an animal cell in metaphase
b) an animal cell in cytokinesis
c) a plant cell in metaphase
d) a plant cell undergoing cytokinesis
23. If a particular cell no longer divides and its DNA has not replicated, it probably
stopped in which stage of the cell cycle or mitosis?
a) S
b) G1
c) G2
d) prophase
24. When does DNA replication take place?
a) interphase
b) metaphase
c) anaphase
d) cytokinesis
25. If a drug blocks cell reproduction by stopping the spindle formation, when does it
act?
a) interphase
b) anaphase
c) prophase
d) telophase
26. Which of these is not part of a chromosome?
a) centromere
b) DNA
c) sister chromatids
d) centriole
27. Which does NOT occur in meiosis?
a) two daughter cells at completion
b) four daughter cells at completion
c) two nuclear divisions
d) formation of tetrads
28. In animal cells, somatic cells result from mitosis and _____ result from meiosis.
a) diploid cells
b) clones
c) gametes
d) spores
29. The cell formed through fertilization is called a/an
a) gamete
b) sperm cell
c) zygote
30. How many chromosomes would be found in a human sex cell?
a) 46
b) 23
c) 43
d) 26
d) egg cell
III. Using the letters place the following mitosis pictures in order, label each
phase, and labels the parts of the cell.
a. interphase
b. prophase
c. metaphase
d. anaphase
e. telophase/cytokinesis
d. cell plate
ab. cleavage furrow
ac. spindle fibers
ad. centrioles
ae. chromatin
abc. centromere
abd. sister chromatids
Essays:
1. Compare the process of oogenesis and spermatogenesis. (5 pnts)
2. Compare the processes and products of mitosis and meiosis include in your answer
where each would take place. (8 pnts)
3. Explain the process of crossing-over and why it is important. (2 pnts)