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WorksheetsCell Division Review
Total questions: 30
Worksheet time: 15mins
growth
In fertilization the parents chromosomes join, one from the mother, one from the father, these type of chromosomes are called...?
heterozygous
homologous
hybrid
haploid
Which of the following descriptions does not apply to meiosis?
during the 1st division, sister chromatids travel to opposite ends of the cell.
chromosome number of the daughter cells is 1/2 of the parent cell
homologous chromosomes synapse and form tetrads prior to the 1st division
cytoplasm of the cell and all of its organelles are divided approximately in half.
Which of the following explains a significantly low rate of crossing over between two genes (Sordaria lab!)
They are located on separate but homologous chromosomes
The genes code for proteins that have similar functions
The genes are located very close together on the same chromosome.
The genes code for proteins that have very different functions.
All of the following contribute to genetic recombination or variation in offspring EXCEPT
gene linkage
crossing over
independent assortment
random fertilization
Chromosome number is reduced to haploid in meiosis. What event must occur to restore the diploid chromosome number?
mitosis
fertilization
synapsis during prophase
DNA replication
Which of the following events is typical of the 2nd meiotic division?
paternal and maternal chromosomes assort randomly
the chromosome number becomes haploid
crossing over between nonsister chromatids
sister chromatids migrate to separate poles
A cell with a diploid number of 6 chromosomes could produce gametes with how many different combinations of maternal and paternal chromosomes?
6
8
12
64
The DNA content of a diploid cell is measured in the G1 phase. After meiosis I, the DNA content of one of the two cells produced would be
equal to that of the G1 cell.
1/2 that of the G1 cell.
1/4 that of the G1 cell.
2X that of the G1 cell.
True or False? Both meiosis II and mitosis have phases where sister chromatids separate.
True
False
Independent assortment of chromosomes at metaphase I results in an increase in the number of
gametes (sex cells)
homologous chromosomes
sex chromosomes
possible combinations of characteristics
Extra Credit! Try it! Given the following recombination frequencies, what is the correct order of the genes on the chromosome? Remember small map units means closer together. A to B= 8 map units, A to C = 28, A to D = 25, B to C = 20 , B to D = 33.
A-B-C-D
D-C-A-B
A-D-C-B
D-A-B-C
If there is a mutation in M cyclin so that it does not bind with a CD-kinase, would mitosis occur?
Yes
No
DNA synthesis check point prior to mitosis occurs at which part of the cell cycle?
G1
G2
M
S
Cells that never go through mitosis remain in what part of the cell cycle?
G0
G1
G2
M
Which term refers to the type of cell regulation that can cause cancer? Proto- oncogene or oncogene?
Oncogene
Proto-oncogene
Does cancer occur with tumor suppressor genes when they are turned on or off?
On
Off
