Mitosis and Meiosis Exam
1. How many tetrads are there in metaphase I of meiosis in human beings?
A. 2
B. 22
C. 23
D. 46
E. 92
2. Mendel's rule of independent assortment is violated by
A. the chromosomal theory of inheritance.
B. crossing-over event.
C. both of these choices
D. none of these choices
E. no violations.
3. Segregation and independent assortment (as defined by Mendel) occur during
A. metaphase of mitosis.
B. metaphase of meiosis I.
C. anaphase of meiosis I.
D. anaphase of meiosis II.
E. metaphase of meiosis II.
4. Identify the stage of cell division and the diploid number of the cell in figure 3.1.
A. metaphase of mitosis, 2n = 4
B. metaphase I of meiosis, 2n = 4
C. metaphase I of meiosis, 2n = 8
D. metaphase II of meiosis, 2n = 4
E. none of these choices
5. Identify the stage of cell division and the diploid number of the cell in figure 3.2.
A. metaphase of mitosis, 2n = 4
B. metaphase I of meiosis, 2n = 2
C. metaphase I of meiosis, 2n = 4
D. metaphase II of meiosis, 2n = 4
E. none of these choices
6. What process and what ploidy number of the parent organism are shown in the cell in figure 3.3?
A. mitosis, 2n = 4
B. mitosis, 2n = 8
C. meiosis I, 2n = 2
D. meiosis I, 2n = 4
E. meiosis II, 2n = 4
7. What process and what ploidy number of the parent organism are shown in the cell in figure 3.4?
A. mitosis, 2n = 4
B. mitosis, 2n = 8
C. meiosis I, 2n = 2
D. meiosis I, 2n = 4
E. meiosis II, 2n = 4
8. In a particular Drosophila species, 2n = 10. How many chromosomal tetrads are there at the first meiotic metaphase?
A. one
B. five
C. ten
D. twenty
E. forty
9. How many chromatids are seen in a cell in metaphase I of meiosis in a human being?
A. four
B. twenty-three
C. forty-six
D. ninety-two
E. 184
10. The cell shown in figure 3.5 is in anaphase. Name the most likely process and chromosome number (2n) of an adult organism.
A. mitosis, 2n = 2
B. mitosis, 2n = 4
C. meiosis II, 2n = 2
D. meiosis II, 2n = 4
E. two of these
11. The cell shown in figure 3.6 is in anaphase. Name the most likely process and chromosome number (2n) of an adult organism.
A. mitosis, 2n = 2
B. mitosis, 2n = 4
C. meiosis I, 2n = 2
D. meiosis I, 2n = 4
E. meiosis II, 2n = 4
12. The cell shown in figure 3.7 is in anaphase. Name the most likely process and chromosome number (2n) of the organism.
A. mitosis, 2n = 2
B. mitosis, 2n = 4
C. meiosis I, 2n = 2
D. meiosis I, 2n = 4
E. meiosis II, 2n = 4
13. A chromosome with its centromere at the end is called
A. metacentric.
B. telocentric.
C. acrocentric.
D. submetacentric.
E. subtelocentric.
14. The attachment point of microtubules to chromosomes is called
A. kinetochore.
B. centromere.
C. telomere.
D. chromatin.
E. none of these choices
15. The stage between mitoses in eukaryotic cells is called
A. prophase.
B. interphase.
C. telophase.
D. cytophase.
E. none of these choices
16. Meiosis is a form of
A. meiosis.
B. cytokinesis.
C. karyokinesis.
D. kinetochore.
E. none of these choices
17. Mitosis is a form of
A. meiosis.
B. cytokinesis.
C. karyokinesis.
D. kinetochore.
E. none of these choices
18. The nucleoprotein material of the chromosome is called
A. a centromere.
B. chromatin.
C. microtubular.
D. a synaptonemal complex.
E. a centriole.
19. Eukaryotes
A. are less than 5 mm in length.
B. include fungi.
C. have a nuclear membrane.
D. two of these choices
E. all of these choices
20. Prokaryotes
A. are less than 5 mm in length.
B. include fungi.
C. have a nuclear membrane.
D. two of these choices
E. all of these choices
21. How many chromosomes (as opposed to chromatids) are there in metaphase II of meiosis in human beings?
A. two
B. twenty-two
C. twenty-three
D. forty-six
E. ninety-two
22. How many tetrads occur in Drosophila melanogaste eight chromosomes) at metaphase I of meiosis?
A. one
B. two
C. four
D. eight
E. sixteen
23. The cell shown in figure 3.9 is in anaphase. Name the most likely process and chromosome number (2n) of an adult organism.
A. mitosis, 2n = 4
B. mitosis, 2n = 8
C. meiosis I, 2n = 2
D. meiosis I, 2n = 4
E. meiosis II, 2n = 2
24. The cell shown in figure 3.8 is in anaphase. Name the most likely process and chromosome number (2n) of the organism.
A. mitosis, 2n = 4
B. mitosis, 2n = 8
C. meiosis I, 2n = 4
D. meiosis II, 2n = 2
E. meiosis II, 2n = 4
25. Most adult eukaryotic cells are
A. haploid.
B. diploid.
C. triploid.
D. monoploid.
E. tetraploid.
26. The photographic arrangement of an organism's chromosomes is called
A. a karyotype.
B. an idiogram.
C. a chromogram.
D. a karyokinesis.
E. an anagram.
27. Chromosomes that come in identical pairs are called
A. metacentric.
B. telocentric.
C. homocentric.
D. homomorphic.
E. heteromorphic.
28. The nuclear body involved in ribosome construction is the
A. centriole.
B. spindle.
C. centromere.
D. kinetochore.
E. nucleolus.
29. The proteinaceous complex mediating synapsis is called the
A. zygonemal complex.
B. pachynemal complex.
C. leptonemal complex.
D. synaptonemal complex.
E. diplonemal complex.
30. The X-shaped figures seen during prophase I of meiosis are
A. leptonema.
B. zygonema.
C. chiasmata.
D. diakinesis.
E. synaptonema.
31. The second meiotic division is called
A. reductional.
B. equational.
C. nominal.
D. recombinational.
E. synaptonemal.
32. The cell that gives rise directly to a sperm is a
A. spermatid.
B. primary spermatocyte.
C. secondary spermatocyte.
D. spermatogonium.
E. polar body.
33. The maximum number of polar bodies created during oogenesis is
A. zero.
B. one.
C. two.
D. three.
E. four.
34. A plant gametophyte is the
A. sporophyte.
B. secondary spermatocyte.
C. secondary oocyte.
D. pollen grain.
E. parthenogenote.
35. Genetically, locus is a synonym for
A. chromosome.
B. gene.
C. allele.
D. chromatid.
E. two of these
36. Which of the following is necessary for the start of mitosis?
A. The produce of cdc2 must be destroyed.
B. Dephosphorylated p34cdc2 must interact with cyclin B.
C. Phosphorylated p34cdc2 must interact with cyclin B.
D. Phosphorylated p34cdc2 must interact with cyclin A.
E. Cyclin B must be at a low level.
37. How many ova can be produced by 20 primary oocytes?
A. 5
B. 10
C. 20
D. 40
E. 80
38. How many spermatids are produced by 20 secondary spermatocytes?
A. 5
B. 10
C. 20
D. 40
E. 80
39. Which of the following is true of a cell just after mitosis?
A. p34cdc2 is dephosphorylated.
B. The amount of cyclin A is high.
C. The amount of cyclin A is low.
D. The amount of cyclin B is high.
E. The amount of cyclin B is low.
40. Which of the following is responsible for the formation of the mitotic spindle?
A. centrioles
B. dynein
C. centrosome
D. kinetochore
E. aster