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WorksheetsCell Reproduction- EOC Review
Total questions: 27
Worksheet time: 18mins
What type of cells undergo mitosis?
all body cells
only gametes (sex cells)
What is mitosis used for in the body?
Creation of sex cells
Movement
Growth and repair
Sexual reproduction
A human sex cell (such as an egg cell or sperm cell) has just been made in meiosis. How many chromosomes should it have? (hint: a normal human body cell has 46 chromosomes).
11
23
46
48
The lion (Pantera leo) has 19 chromosomes in its gametes (sex cells). How many chromosomes are in its body cells?
19
9.5
38
76
The sugar glider (Petaurus breviceps) has 22 chromosomes in its body cell. How many chromosomes are in its gametes (sex cells)?
22
11
44
5.5
Gametes are
egg and sperm
egg only
sperm only
body cells
If there are 20 chromosomes in the nucleus before mitosis how many will there be in each new daughter cell after cytokinesis?
20
10
40
200
In what phase of Interphase does DNA divide rapidly?
G1
S
G2
DNA is packed into __________
Chromosomes
Centrioles
Spindles
Chromatids
The division of a cells cytoplasm at the end of mitosis or meiosis, bringing about the separation into two daughter cells.
Cytoplasm
Cytokinesis
Chromatin
Centromere
A cell that contains 2 copies of each chromosome. (2N)
Diploid
Haploid
Zygote
1N
Cells that have one copy of each chromosome. (1N)
2N
Diploid
3N
Haploid
Reproductive cells that are haploid (1N).
Gamete
Zygote
Diploid
Haploid
Chromosomes that are the same size and carry the same genes are called what?
Sister Chromosomes
Sister Chromatids
Homologous Chromosomes
Centromeresn
At the end of meiosis II, how does the DNA in each of the four new cells compare to the DNA from the original cell?
half as much and genetically the same as the original
twice as much and genetically the same as the original
half as much and genetically different from the original
twice as much and genetically different from the original
The diagram shows a bacterial cell dividing. What is an ADVANTAGE of this type of reproduction?
It is a slow process.
Only one parent is required.
New genetic combinations are created
Offspring are well adapted to a changing environment
Meiosis results in the formation of ___.
two genetically different, diploid cells
four genetically identical, haploid cells.
two genetically identical ,diploid cells.
four genetically different, haploid cells.
Crossing over in Prophase I of meiosis results in _____.
a female genotype.
genetic diversity.
a phenotype replication.
a male genotype.
All of the following circumstances, EXCEPT ___________ can produce new combinations of genetic traits in sperm and eggs that are different from the parents.
errors during meiosis
errors during mitosis
crossing over during meiosis
mutations due to exposure to chemicals
Mutations can occur in the chromosomes of all types of cells. Mutations that are passed onto offspring must occur in ____.
gametes
body cells.
stem cells.
somatic cells.
The diagram shows a bacterial cell dividing. What is a DISADVANTAGE of this type of reproduction?
It is a slow process.
Only one parent is required.
New genetic combinations are created.
Offspring are not well adapted to a changing environment.
What is one distinct DISADVANTAGE of sexual reproduction?
Organisms that sexually reproduce do not produce much genetic variety.
Sexual reproduction, unlike asexual reproduction, can rapidly produce too many new offspring.
Sexual reproduction requires two individuals, which may be difficult for endangered or uncommon species of organisms.
Sexual reproduction produces offspring that are all equally vulnerable to the same diseases, predators, and other environmental pressures.
Which is an ADVANTAGE of sexual reproduction?
Two parents are required.
Only one parent is required.
It leads to genetically diverse offspring.
It leads to genetically identical offspring.
