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MEIOSIS
1- Which of the following is same for monoploid and diploid ?
A- Chromosome structure B- Amount of genes
C- Chromosome number D- Both have identical genes
E- Amount of DNA
2- Which of the following is false for diploid cells ?
A-It has same number of chromosome with zygote
B-It is produced by mitosis
C-It has same number of chromosome with mother
D-It is produced by meiosis
E-It has same chromosome structure with zygote
3- Which of the following is a difference between mitosis and meiosis ?
A-Replication of DNA B-Formation of spindle fibers C-Location of chromosome on equator of cell
D- Shortening and thickening of chromosomes
E- Formation of chromatids
4- Which of the following is the name of exchance of parts between homologous chromosomes ?
A- Crossing-over B-Translation C-Transcription D- Linked-genes
5- Which of the following doesnt occur during meiosis ?
A- Separation of sister chromatids B- Division of cytoplasm C-Formation of diploid cell D-Separation of homologous chromosomes . E- Moving of centrosomes to opposite poles
6- In which of the following stages the amount of DNA increases ?
A- Interphase B- Metaphase C- Telophase D- Anaphase E- Prophase
7- Crossing-over occurs in..
A- Interphase I B- Prophase I C- Prophase II
D- Anaphase II E- Anaphase I
8- 1- Meiosis 2- Mitosis 3- Asexually reproduction
Which of the above cause genetic variety in living things ?
A- 1,2 B- 2,3 C- 2 D- 1,2,3 E- 1
9- In which stage of meiosis are the homologous chromosomes separated from each other ?
A- Prophase I B- Anaphase II C- Telophase I D- Anaphase I E- Telophase II
10- Which of the following cells of female monkey has half number of chromosomes ?
A- Muscle cell B- Skin Cell C- Egg cells D- Nerve cells E- Blood cells
11- 2n = 36 What is the number of tetrads in the meiotic division of this cell ?
A- 9 B- 10 C- 18 D- 20 E- 72
12- How many chromatids are found in the stage of metaphse II cell with 2n = 40 chromosomes ?
A- 20 B- 80 C- 10 D- 40 E- 160
13- Which isnt correct for meiosis ?
A- It reduces the chromosome number into half
B- Occurs only in plant cell
C- Occurs only in reproductive cells
D- Four cells form at the end of the meiosis
E- Involves two divisions
14- How many chromosomes are there in human body cells ?
A- 23 B- 92 C- 46 D- 15 E- 115
15- How many chromosomes are there in gametes of human?
A- 46 B- 22 C- 26 D- 23 E- 44
16- Homologous chromosomes are
A- Sister chromosomes B- Contain different information
C- Brother chromosomes
D- Contain half of each others chromosomes
E- Contain same information in same order
17- 1- Cells of sense organs 2-Cells in lungs
3-Sperm cells 4-Cells in reproductive organs
5-Formation of gametes in haploid organisms
In which of the above cells a meiotic cell division can be observed ?
A- 1,2,3,4,5 B- 3,4,5 C- 4 D- 5 E- 4,5
18- Which of the following is difference between meiosis and mitosis ?
A-Duplication of chromosomes B-Formation of chromatids C- Movement of chromosomes toward poles
D- The apperance and dissappearence of chromosomes E- The number of cell being formed at the and of the division
19- A cell with 2n = 20 undergoes three succesive mitotic cell division and then meiotic cell division. Which of the following shows number of doughter cells and their chromosomes ?
A-16 cells with 40 chromosomes
B-16 cells with 10 chromosomes
C-32 cells with 20 chromosomes
D- 64 cells with 20 chromosomes
E- 32 cells with 10 chromosomes
20- If 8 tetrads are forming in the period of meiosis ,what is the number of chromosomes in this organisms?
A- 4 B- 8 C- 16 D- 32 E-64
21-- If in the somatic cells of organisms forms 44 chromatids in mitosis.What are the numbers of tetrads, a pair of homologous chromosomes and chromosomes in the reproductive cells at prophase ?
A pair of
Tetrads Homologous chromosome Chromosome
A- 44 88 44
B- 22 88 44
C- 11 11 22
D- 22 22 22
E- 11 11 11
F-
22- 1- DNA duplication 2- Chromatids move oppsite poles 3-Formation of gametes 4- Pinched of cytoplasm
Which of the above properties are the differences between mitosis and meiosis ?
A- 1,2 B- 3 C- 2,3 D- 4 E- 3,4
23- Which of the following is a result of crossing over in meiosis
A- Chromosomes number changes
B- Chromosome structure changes
C- Variations in species
D- Variation of gametes
E- Two brothers which has born in different times are similar
24- Which of the following cells of female monkey has half number of chromosome ?
A- Muscle cells B- Skin cells C- Egg cells
D- Nerve cells E- Blood cells
25- Which is the name given to the phase in which on exact copy of DNA is made in nucleus?
A- Interphase B- S C- G2 D- Prophase E- Telophase
26- I- Different number of chromosome
II- Different structure of chromosome
III- Increasing in number of varieties
Which one is seen at the and of the crossing-over ?
a) I b) II c) I-II d) I-III e) II-III
27- A diploid cell (2n=10) divides two times by mitosis and then each of the formed cells divides by meiosis. What would be the number of cells and number of chromosomes in each cell at the and of the divisions ?
Cells number Chromosomes
a) 16 5
b) 4 10
c) 16 10
d) 4 5
e) 32 10
28- Which of the following cells is formed as a result af meiosis ?
A- Muscle cells B- Skin cells C- Egg cells
D- Nerve cells E- Blood cells
29-- In a meiotically dividing cell the amount of DNA at the G1 stage is labelled as X.
30-How many DNA would be found in metaphase 1and metaphase 2 of this cell?
A) X, 0.5 X B) 2X, 0.5X C) 2X, 4X D) 4X, 2X E) 2X, X
31`-Which of the following has a pair alleles of on its chromosomes ?
A) pallent grain B) embryonic sac C) human gamete D) bryophyte spare
E) bryophyte sporophyte
32. What number of chromosomes would be expected in the nerve cells of an animal whose gametes have 16 chromosomes ?
A) 8 B) 12 C) 16 D) 32 C) 64
33- Which of the following occurs during anaphase 1 of meiosis?
A- Formating of tetrads
B- Separation of homologous chromosomes
C- Crossing over
D- Separation of sister chromatids, with one chromatid pulled toward each pole
E-Assembly of chromosomes along the equatorial plane
34-Mitosis and meiosis are similar in that both
(A) Are preceded by the replication of DNA during interfase
(B) Require two successive cell divisions
(C) Involve reduction of chromosome number
(D) Yield the same number of cells
(E) Occurs in somatic cells
35-What is crossing over?
A) occurs during mitosis, nonsister chromatids exchange segments of DNA
B) occurs duriing meiosis, independent assortment of chromosomes into gametes
C) occurs during mitosis, the spindle network migrates from one pole oof the cell to the other
D) occurs during meiosis, nonsister chromatides exchange segments of DNA
36- At which stage in meiosis does an exchage of genetic information between pairs of chromosomes occur.
A) Telophase I
B) Metaphse I
C) Meiosis II
D) Prophase I
37-which of the following is true of meosis?
A) Only occurs in animals
B) Can occur in any cell in your body
C) Results in identical daughter cells
D) Reduces the number of cromosomes in the cells produced
E) Only occurs to form non-dividing cells such as neurons
38-)Synapsis of homologous chromosomes in prophase of meiosis-one means:
A.attraction and paring
B.building and synthesis
C.division and seperation
D.duplication and splitting
E.repulsion and separation
39-)A primary sex-cell experiences one nondisjunction during meiosis. İf the normal diploid number of chromosomes in the cell is 42, how many chromosomes are present in one of the defective gametes?
A.20 B.21 C.24 D.41 E.43
40-)A mouse sperm contains 20 chromosomes. How many sister chromatids would be present in a mouse cell during metaphase of the first meiotic division?
A.10 B.20 C.40 D.80 E.160
41-.Which one is the difference between mitosis and miosis?
a) Duplication of chromosomes
b) Accumulation of chromosomes at equatorial plate
c) Forming the chromatics
d) Formation of new cells
e) Having the number of chromosomes in the new cell
42- Which is not a feature of meiosis?
43- Their paring results in tetrads
44-- An exchange of segments between non-sister chromatuds
45-- The chromosome number of a cell after telophase 1.
46- The constricted point on the chromosome at which sister chromatids are attached .
47-- Separations of homologous chromosomes occurs during what phase of meiosis?
48-- Senapsis of homologous chromosomes in prophase of meiosis-one means:
49-- Which of the following doesn`t occur during meiosis?
50-- In which stage of meiosis are the homologous chromosomes separated from each other?
51-- Which of the following cell of female momkey has half number of chromosomes?
52-) Which is not correct for meiosis?
a)It reduces the chromosome numbers into half
b) Four cells form by one meiotic division
c) Occurs only in plan cell
d) Occurs in reproductive cells
e) Involves two divisions.